Precalculus Examples

$\sin (4 x) + \sin (8 x)$

Step 1

Simplify terms.

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Step 1.1

Simplify each term.

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Step 1.1.1

Factor $2$ out of $4 x$ .

$\sin (2 (2 x)) + \sin (8 x)$

Step 1.1.2

Apply the sine double-angle identity.

$2 (2 \sin (x) \cos (x)) \cos (2 x) + \sin (8 x)$

Step 1.1.3

Multiply $2$ by $2$ .

$4 (\sin (x) \cos (x)) \cos (2 x) + \sin (8 x)$

Step 1.1.4

Use the double-angle identity to transform $\cos (2 x)$ to $1 - 2 \sin^{2} (x)$ .

$4 \sin (x) \cos (x) (1 - 2 \sin^{2} (x)) + \sin (8 x)$

Step 1.1.5

Apply the distributive property.

$4 \sin (x) \cos (x) \cdot 1 + 4 \sin (x) \cos (x) (- 2 \sin^{2} (x)) + \sin (8 x)$

Step 1.1.6

Multiply $4$ by $1$ .

$4 \sin (x) \cos (x) + 4 \sin (x) \cos (x) (- 2 \sin^{2} (x)) + \sin (8 x)$

Step 1.1.7

Multiply $\sin (x)$ by $\sin^{2} (x)$ by adding the exponents.

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Step 1.1.7.1

Move $\sin^{2} (x)$ .

$4 \sin (x) \cos (x) + 4 (\sin^{2} (x) \sin (x)) \cos (x) \cdot - 2 + \sin (8 x)$

Step 1.1.7.2

Multiply $\sin^{2} (x)$ by $\sin (x)$ .

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Step 1.1.7.2.1

Raise $\sin (x)$ to the power of $1$ .

$4 \sin (x) \cos (x) + 4 (\sin^{2} (x) \sin^{1} (x)) \cos (x) \cdot - 2 + \sin (8 x)$

Step 1.1.7.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) + 4 {\sin (x)}^{2 + 1} \cos (x) \cdot - 2 + \sin (8 x)$

Step 1.1.7.3

Add $2$ and $1$ .

$4 \sin (x) \cos (x) + 4 \sin^{3} (x) \cos (x) \cdot - 2 + \sin (8 x)$

Step 1.1.8

Multiply $- 2$ by $4$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + \sin (8 x)$

Step 1.1.9

Factor $2$ out of $8 x$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + \sin (2 (4 x))$

Step 1.1.10

Factor $2$ out of $4 x$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 2 \sin (2 (2 x)) \cos (4 x)$

Step 1.1.11

Apply the sine double-angle identity.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 2 (2 (2 \sin (x) \cos (x)) \cos (2 x)) \cos (4 x)$

Step 1.1.12

Multiply $2$ by $2$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 2 (4 (\sin (x) \cos (x)) \cos (2 x)) \cos (4 x)$

Step 1.1.13

Use the double-angle identity to transform $\cos (2 x)$ to $1 - 2 \sin^{2} (x)$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 2 (4 \sin (x) \cos (x) (1 - 2 \sin^{2} (x))) \cos (4 x)$

Step 1.1.14

Apply the distributive property.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 2 (4 \sin (x) \cos (x) \cdot 1 + 4 \sin (x) \cos (x) (- 2 \sin^{2} (x))) \cos (4 x)$

Step 1.1.15

Multiply $4$ by $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 2 (4 \sin (x) \cos (x) + 4 \sin (x) \cos (x) (- 2 \sin^{2} (x))) \cos (4 x)$

Step 1.1.16

Multiply $\sin (x)$ by $\sin^{2} (x)$ by adding the exponents.

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Step 1.1.16.1

Move $\sin^{2} (x)$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 2 (4 \sin (x) \cos (x) + 4 (\sin^{2} (x) \sin (x)) \cos (x) \cdot - 2) \cos (4 x)$

Step 1.1.16.2

Multiply $\sin^{2} (x)$ by $\sin (x)$ .

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Step 1.1.16.2.1

Raise $\sin (x)$ to the power of $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 2 (4 \sin (x) \cos (x) + 4 (\sin^{2} (x) \sin^{1} (x)) \cos (x) \cdot - 2) \cos (4 x)$

Step 1.1.16.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 2 (4 \sin (x) \cos (x) + 4 {\sin (x)}^{2 + 1} \cos (x) \cdot - 2) \cos (4 x)$

Step 1.1.16.3

Add $2$ and $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 2 (4 \sin (x) \cos (x) + 4 \sin^{3} (x) \cos (x) \cdot - 2) \cos (4 x)$

Step 1.1.17

Multiply $- 2$ by $4$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 2 (4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x)) \cos (4 x)$

Step 1.1.18

Apply the distributive property.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (2 (4 \sin (x) \cos (x)) + 2 (- 8 \sin^{3} (x) \cos (x))) \cos (4 x)$

Step 1.1.19

Multiply $4$ by $2$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 (\sin (x) \cos (x)) + 2 (- 8 \sin^{3} (x) \cos (x))) \cos (4 x)$

Step 1.1.20

Multiply $- 8$ by $2$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 (\sin (x) \cos (x)) - 16 (\sin^{3} (x) \cos (x))) \cos (4 x)$

Step 1.1.21

Remove parentheses.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) \cos (4 x)$

Step 1.1.22

Factor $2$ out of $4 x$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) \cos (2 (2 x))$

Step 1.1.23

Simplify each term.

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Step 1.1.23.1

Use the double-angle identity to transform $\cos (2 x)$ to $1 - 2 \sin^{2} (x)$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) ({(1 - 2 \sin^{2} (x))}^{2} - \sin^{2} (2 x))$

Step 1.1.23.2

Rewrite ${(1 - 2 \sin^{2} (x))}^{2}$ as $(1 - 2 \sin^{2} (x)) (1 - 2 \sin^{2} (x))$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) ((1 - 2 \sin^{2} (x)) (1 - 2 \sin^{2} (x)) - \sin^{2} (2 x))$

Step 1.1.23.3

Expand $(1 - 2 \sin^{2} (x)) (1 - 2 \sin^{2} (x))$ using the FOIL Method.

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Step 1.1.23.3.1

Apply the distributive property.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 (1 - 2 \sin^{2} (x)) - 2 \sin^{2} (x) (1 - 2 \sin^{2} (x)) - \sin^{2} (2 x))$

Step 1.1.23.3.2

Apply the distributive property.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 \cdot 1 + 1 (- 2 \sin^{2} (x)) - 2 \sin^{2} (x) (1 - 2 \sin^{2} (x)) - \sin^{2} (2 x))$

Step 1.1.23.3.3

Apply the distributive property.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 \cdot 1 + 1 (- 2 \sin^{2} (x)) - 2 \sin^{2} (x) \cdot 1 - 2 \sin^{2} (x) (- 2 \sin^{2} (x)) - \sin^{2} (2 x))$

Step 1.1.23.4

Simplify and combine like terms.

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Step 1.1.23.4.1

Simplify each term.

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Step 1.1.23.4.1.1

Multiply $1$ by $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 + 1 (- 2 \sin^{2} (x)) - 2 \sin^{2} (x) \cdot 1 - 2 \sin^{2} (x) (- 2 \sin^{2} (x)) - \sin^{2} (2 x))$

Step 1.1.23.4.1.2

Multiply $- 2 \sin^{2} (x)$ by $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 - 2 \sin^{2} (x) - 2 \sin^{2} (x) \cdot 1 - 2 \sin^{2} (x) (- 2 \sin^{2} (x)) - \sin^{2} (2 x))$

Step 1.1.23.4.1.3

Multiply $- 2$ by $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 - 2 \sin^{2} (x) - 2 \sin^{2} (x) - 2 \sin^{2} (x) (- 2 \sin^{2} (x)) - \sin^{2} (2 x))$

Step 1.1.23.4.1.4

Rewrite using the commutative property of multiplication.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 - 2 \sin^{2} (x) - 2 \sin^{2} (x) - 2 \cdot - 2 \sin^{2} (x) \sin^{2} (x) - \sin^{2} (2 x))$

Step 1.1.23.4.1.5

Multiply $\sin^{2} (x)$ by $\sin^{2} (x)$ by adding the exponents.

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Step 1.1.23.4.1.5.1

Move $\sin^{2} (x)$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 - 2 \sin^{2} (x) - 2 \sin^{2} (x) - 2 \cdot - 2 (\sin^{2} (x) \sin^{2} (x)) - \sin^{2} (2 x))$

Step 1.1.23.4.1.5.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 - 2 \sin^{2} (x) - 2 \sin^{2} (x) - 2 \cdot - 2 {\sin (x)}^{2 + 2} - \sin^{2} (2 x))$

Step 1.1.23.4.1.5.3

Add $2$ and $2$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 - 2 \sin^{2} (x) - 2 \sin^{2} (x) - 2 \cdot - 2 \sin^{4} (x) - \sin^{2} (2 x))$

Step 1.1.23.4.1.6

Multiply $- 2$ by $- 2$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 - 2 \sin^{2} (x) - 2 \sin^{2} (x) + 4 \sin^{4} (x) - \sin^{2} (2 x))$

Step 1.1.23.4.2

Subtract $2 \sin^{2} (x)$ from $- 2 \sin^{2} (x)$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 - 4 \sin^{2} (x) + 4 \sin^{4} (x) - \sin^{2} (2 x))$

Step 1.1.23.5

Apply the sine double-angle identity.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 - 4 \sin^{2} (x) + 4 \sin^{4} (x) - {(2 \sin (x) \cos (x))}^{2})$

Step 1.1.23.6

Use the power rule ${(a b)}^{n} = a^{n} b^{n}$ to distribute the exponent.

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Step 1.1.23.6.1

Apply the product rule to $2 \sin (x) \cos (x)$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 - 4 \sin^{2} (x) + 4 \sin^{4} (x) - ({(2 \sin (x))}^{2} \cos^{2} (x)))$

Step 1.1.23.6.2

Apply the product rule to $2 \sin (x)$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 - 4 \sin^{2} (x) + 4 \sin^{4} (x) - (2^{2} \sin^{2} (x) \cos^{2} (x)))$

Step 1.1.23.7

Raise $2$ to the power of $2$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 - 4 \sin^{2} (x) + 4 \sin^{4} (x) - (4 \sin^{2} (x) \cos^{2} (x)))$

Step 1.1.23.8

Multiply $4$ by $- 1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + (8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 - 4 \sin^{2} (x) + 4 \sin^{4} (x) - 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.24

Expand $(8 \sin (x) \cos (x) - 16 \sin^{3} (x) \cos (x)) (1 - 4 \sin^{2} (x) + 4 \sin^{4} (x) - 4 \sin^{2} (x) \cos^{2} (x))$ by multiplying each term in the first expression by each term in the second expression.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) \cdot 1 + 8 \sin (x) \cos (x) (- 4 \sin^{2} (x)) + 8 \sin (x) \cos (x) (4 \sin^{4} (x)) + 8 \sin (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x)) - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25

Simplify each term.

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Step 1.1.25.1

Multiply $8$ by $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) + 8 \sin (x) \cos (x) (- 4 \sin^{2} (x)) + 8 \sin (x) \cos (x) (4 \sin^{4} (x)) + 8 \sin (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x)) - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.2

Multiply $\sin (x)$ by $\sin^{2} (x)$ by adding the exponents.

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Step 1.1.25.2.1

Move $\sin^{2} (x)$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) + 8 (\sin^{2} (x) \sin (x)) \cos (x) \cdot - 4 + 8 \sin (x) \cos (x) (4 \sin^{4} (x)) + 8 \sin (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x)) - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.2.2

Multiply $\sin^{2} (x)$ by $\sin (x)$ .

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Step 1.1.25.2.2.1

Raise $\sin (x)$ to the power of $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) + 8 (\sin^{2} (x) \sin^{1} (x)) \cos (x) \cdot - 4 + 8 \sin (x) \cos (x) (4 \sin^{4} (x)) + 8 \sin (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x)) - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.2.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) + 8 {\sin (x)}^{2 + 1} \cos (x) \cdot - 4 + 8 \sin (x) \cos (x) (4 \sin^{4} (x)) + 8 \sin (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x)) - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.2.3

Add $2$ and $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) + 8 \sin^{3} (x) \cos (x) \cdot - 4 + 8 \sin (x) \cos (x) (4 \sin^{4} (x)) + 8 \sin (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x)) - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.3

Multiply $- 4$ by $8$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) (4 \sin^{4} (x)) + 8 \sin (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x)) - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.4

Multiply $\sin (x)$ by $\sin^{4} (x)$ by adding the exponents.

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Step 1.1.25.4.1

Move $\sin^{4} (x)$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 8 (\sin^{4} (x) \sin (x)) \cos (x) \cdot 4 + 8 \sin (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x)) - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.4.2

Multiply $\sin^{4} (x)$ by $\sin (x)$ .

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Step 1.1.25.4.2.1

Raise $\sin (x)$ to the power of $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 8 (\sin^{4} (x) \sin^{1} (x)) \cos (x) \cdot 4 + 8 \sin (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x)) - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.4.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 8 {\sin (x)}^{4 + 1} \cos (x) \cdot 4 + 8 \sin (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x)) - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.4.3

Add $4$ and $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 8 \sin^{5} (x) \cos (x) \cdot 4 + 8 \sin (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x)) - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.5

Multiply $4$ by $8$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) + 8 \sin (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x)) - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.6

Multiply $\sin (x)$ by $\sin^{2} (x)$ by adding the exponents.

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Step 1.1.25.6.1

Move $\sin^{2} (x)$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) + 8 (\sin^{2} (x) \sin (x)) \cos (x) (- 4 \cos^{2} (x)) - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.6.2

Multiply $\sin^{2} (x)$ by $\sin (x)$ .

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Step 1.1.25.6.2.1

Raise $\sin (x)$ to the power of $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) + 8 (\sin^{2} (x) \sin^{1} (x)) \cos (x) (- 4 \cos^{2} (x)) - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.6.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) + 8 {\sin (x)}^{2 + 1} \cos (x) (- 4 \cos^{2} (x)) - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.6.3

Add $2$ and $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) + 8 \sin^{3} (x) \cos (x) (- 4 \cos^{2} (x)) - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.7

Multiply $\cos (x)$ by $\cos^{2} (x)$ by adding the exponents.

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Step 1.1.25.7.1

Move $\cos^{2} (x)$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) + 8 \sin^{3} (x) (\cos^{2} (x) \cos (x)) \cdot - 4 - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.7.2

Multiply $\cos^{2} (x)$ by $\cos (x)$ .

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Step 1.1.25.7.2.1

Raise $\cos (x)$ to the power of $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) + 8 \sin^{3} (x) (\cos^{2} (x) \cos^{1} (x)) \cdot - 4 - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.7.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) + 8 \sin^{3} (x) {\cos (x)}^{2 + 1} \cdot - 4 - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.7.3

Add $2$ and $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) + 8 \sin^{3} (x) \cos^{3} (x) \cdot - 4 - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.8

Multiply $- 4$ by $8$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) \cdot 1 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.9

Multiply $- 16$ by $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x)) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.10

Multiply $\sin^{3} (x)$ by $\sin^{2} (x)$ by adding the exponents.

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Step 1.1.25.10.1

Move $\sin^{2} (x)$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) - 16 (\sin^{2} (x) \sin^{3} (x)) \cos (x) \cdot - 4 - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.10.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) - 16 {\sin (x)}^{2 + 3} \cos (x) \cdot - 4 - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.10.3

Add $2$ and $3$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) - 16 \sin^{5} (x) \cos (x) \cdot - 4 - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.11

Multiply $- 4$ by $- 16$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) + 64 \sin^{5} (x) \cos (x) - 16 \sin^{3} (x) \cos (x) (4 \sin^{4} (x)) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.12

Multiply $\sin^{3} (x)$ by $\sin^{4} (x)$ by adding the exponents.

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Step 1.1.25.12.1

Move $\sin^{4} (x)$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) + 64 \sin^{5} (x) \cos (x) - 16 (\sin^{4} (x) \sin^{3} (x)) \cos (x) \cdot 4 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.12.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) + 64 \sin^{5} (x) \cos (x) - 16 {\sin (x)}^{4 + 3} \cos (x) \cdot 4 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.12.3

Add $4$ and $3$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) + 64 \sin^{5} (x) \cos (x) - 16 \sin^{7} (x) \cos (x) \cdot 4 - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.13

Multiply $4$ by $- 16$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) + 64 \sin^{5} (x) \cos (x) - 64 \sin^{7} (x) \cos (x) - 16 \sin^{3} (x) \cos (x) (- 4 \sin^{2} (x) \cos^{2} (x))$

Step 1.1.25.14

Multiply $\sin^{3} (x)$ by $\sin^{2} (x)$ by adding the exponents.

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Step 1.1.25.14.1

Move $\sin^{2} (x)$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) + 64 \sin^{5} (x) \cos (x) - 64 \sin^{7} (x) \cos (x) - 16 (\sin^{2} (x) \sin^{3} (x)) \cos (x) (- 4 \cos^{2} (x))$

Step 1.1.25.14.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) + 64 \sin^{5} (x) \cos (x) - 64 \sin^{7} (x) \cos (x) - 16 {\sin (x)}^{2 + 3} \cos (x) (- 4 \cos^{2} (x))$

Step 1.1.25.14.3

Add $2$ and $3$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) + 64 \sin^{5} (x) \cos (x) - 64 \sin^{7} (x) \cos (x) - 16 \sin^{5} (x) \cos (x) (- 4 \cos^{2} (x))$

Step 1.1.25.15

Multiply $\cos (x)$ by $\cos^{2} (x)$ by adding the exponents.

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Step 1.1.25.15.1

Move $\cos^{2} (x)$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) + 64 \sin^{5} (x) \cos (x) - 64 \sin^{7} (x) \cos (x) - 16 \sin^{5} (x) (\cos^{2} (x) \cos (x)) \cdot - 4$

Step 1.1.25.15.2

Multiply $\cos^{2} (x)$ by $\cos (x)$ .

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Step 1.1.25.15.2.1

Raise $\cos (x)$ to the power of $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) + 64 \sin^{5} (x) \cos (x) - 64 \sin^{7} (x) \cos (x) - 16 \sin^{5} (x) (\cos^{2} (x) \cos^{1} (x)) \cdot - 4$

Step 1.1.25.15.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) + 64 \sin^{5} (x) \cos (x) - 64 \sin^{7} (x) \cos (x) - 16 \sin^{5} (x) {\cos (x)}^{2 + 1} \cdot - 4$

Step 1.1.25.15.3

Add $2$ and $1$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) + 64 \sin^{5} (x) \cos (x) - 64 \sin^{7} (x) \cos (x) - 16 \sin^{5} (x) \cos^{3} (x) \cdot - 4$

Step 1.1.25.16

Multiply $- 4$ by $- 16$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 32 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 16 \sin^{3} (x) \cos (x) + 64 \sin^{5} (x) \cos (x) - 64 \sin^{7} (x) \cos (x) + 64 \sin^{5} (x) \cos^{3} (x)$

Step 1.1.26

Subtract $16 \sin^{3} (x) \cos (x)$ from $- 32 \sin^{3} (x) \cos (x)$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 48 \sin^{3} (x) \cos (x) + 32 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) + 64 \sin^{5} (x) \cos (x) - 64 \sin^{7} (x) \cos (x) + 64 \sin^{5} (x) \cos^{3} (x)$

Step 1.1.27

Add $32 \sin^{5} (x) \cos (x)$ and $64 \sin^{5} (x) \cos (x)$ .

$4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 48 \sin^{3} (x) \cos (x) + 96 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 64 \sin^{7} (x) \cos (x) + 64 \sin^{5} (x) \cos^{3} (x)$

Step 1.2

Simplify with factoring out.

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Step 1.2.1

Factor $4 \sin (x) \cos (x)$ out of $4 \sin (x) \cos (x) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 48 \sin^{3} (x) \cos (x) + 96 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 64 \sin^{7} (x) \cos (x) + 64 \sin^{5} (x) \cos^{3} (x)$ .

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Step 1.2.1.1

Factor $4 \sin (x) \cos (x)$ out of $4 \sin (x) \cos (x)$ .

$4 \sin (x) \cos (x) (1) - 8 \sin^{3} (x) \cos (x) + 8 \sin (x) \cos (x) - 48 \sin^{3} (x) \cos (x) + 96 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 64 \sin^{7} (x) \cos (x) + 64 \sin^{5} (x) \cos^{3} (x)$

Step 1.2.1.2

Factor $4 \sin (x) \cos (x)$ out of $- 8 \sin^{3} (x) \cos (x)$ .

$4 \sin (x) \cos (x) (1) + 4 \sin (x) \cos (x) (- 2 \sin^{2} (x)) + 8 \sin (x) \cos (x) - 48 \sin^{3} (x) \cos (x) + 96 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 64 \sin^{7} (x) \cos (x) + 64 \sin^{5} (x) \cos^{3} (x)$

Step 1.2.1.3

Factor $4 \sin (x) \cos (x)$ out of $8 \sin (x) \cos (x)$ .

$4 \sin (x) \cos (x) (1) + 4 \sin (x) \cos (x) (- 2 \sin^{2} (x)) + 4 \sin (x) \cos (x) (2) - 48 \sin^{3} (x) \cos (x) + 96 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 64 \sin^{7} (x) \cos (x) + 64 \sin^{5} (x) \cos^{3} (x)$

Step 1.2.1.4

Factor $4 \sin (x) \cos (x)$ out of $- 48 \sin^{3} (x) \cos (x)$ .

$4 \sin (x) \cos (x) (1) + 4 \sin (x) \cos (x) (- 2 \sin^{2} (x)) + 4 \sin (x) \cos (x) (2) + 4 \sin (x) \cos (x) (- 12 \sin^{2} (x)) + 96 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 64 \sin^{7} (x) \cos (x) + 64 \sin^{5} (x) \cos^{3} (x)$

Step 1.2.1.5

Factor $4 \sin (x) \cos (x)$ out of $96 \sin^{5} (x) \cos (x)$ .

$4 \sin (x) \cos (x) (1) + 4 \sin (x) \cos (x) (- 2 \sin^{2} (x)) + 4 \sin (x) \cos (x) (2) + 4 \sin (x) \cos (x) (- 12 \sin^{2} (x)) + 4 \sin (x) \cos (x) (24 \sin^{4} (x)) - 32 \sin^{3} (x) \cos^{3} (x) - 64 \sin^{7} (x) \cos (x) + 64 \sin^{5} (x) \cos^{3} (x)$

Step 1.2.1.6

Factor $4 \sin (x) \cos (x)$ out of $- 32 \sin^{3} (x) \cos^{3} (x)$ .

$4 \sin (x) \cos (x) (1) + 4 \sin (x) \cos (x) (- 2 \sin^{2} (x)) + 4 \sin (x) \cos (x) (2) + 4 \sin (x) \cos (x) (- 12 \sin^{2} (x)) + 4 \sin (x) \cos (x) (24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) - 64 \sin^{7} (x) \cos (x) + 64 \sin^{5} (x) \cos^{3} (x)$

Step 1.2.1.7

Factor $4 \sin (x) \cos (x)$ out of $- 64 \sin^{7} (x) \cos (x)$ .

$4 \sin (x) \cos (x) (1) + 4 \sin (x) \cos (x) (- 2 \sin^{2} (x)) + 4 \sin (x) \cos (x) (2) + 4 \sin (x) \cos (x) (- 12 \sin^{2} (x)) + 4 \sin (x) \cos (x) (24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 64 \sin^{5} (x) \cos^{3} (x)$

Step 1.2.1.8

Factor $4 \sin (x) \cos (x)$ out of $64 \sin^{5} (x) \cos^{3} (x)$ .

$4 \sin (x) \cos (x) (1) + 4 \sin (x) \cos (x) (- 2 \sin^{2} (x)) + 4 \sin (x) \cos (x) (2) + 4 \sin (x) \cos (x) (- 12 \sin^{2} (x)) + 4 \sin (x) \cos (x) (24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 1.2.1.9

Factor $4 \sin (x) \cos (x)$ out of $4 \sin (x) \cos (x) (1) + 4 \sin (x) \cos (x) (- 2 \sin^{2} (x))$ .

$4 \sin (x) \cos (x) (1 - 2 \sin^{2} (x)) + 4 \sin (x) \cos (x) (2) + 4 \sin (x) \cos (x) (- 12 \sin^{2} (x)) + 4 \sin (x) \cos (x) (24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 1.2.1.10

Factor $4 \sin (x) \cos (x)$ out of $4 \sin (x) \cos (x) (1 - 2 \sin^{2} (x)) + 4 \sin (x) \cos (x) (2)$ .

$4 \sin (x) \cos (x) (1 - 2 \sin^{2} (x) + 2) + 4 \sin (x) \cos (x) (- 12 \sin^{2} (x)) + 4 \sin (x) \cos (x) (24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 1.2.1.11

Factor $4 \sin (x) \cos (x)$ out of $4 \sin (x) \cos (x) (1 - 2 \sin^{2} (x) + 2) + 4 \sin (x) \cos (x) (- 12 \sin^{2} (x))$ .

$4 \sin (x) \cos (x) (1 - 2 \sin^{2} (x) + 2 - 12 \sin^{2} (x)) + 4 \sin (x) \cos (x) (24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 1.2.1.12

Factor $4 \sin (x) \cos (x)$ out of $4 \sin (x) \cos (x) (1 - 2 \sin^{2} (x) + 2 - 12 \sin^{2} (x)) + 4 \sin (x) \cos (x) (24 \sin^{4} (x))$ .

$4 \sin (x) \cos (x) (1 - 2 \sin^{2} (x) + 2 - 12 \sin^{2} (x) + 24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 1.2.1.13

Factor $4 \sin (x) \cos (x)$ out of $4 \sin (x) \cos (x) (1 - 2 \sin^{2} (x) + 2 - 12 \sin^{2} (x) + 24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x))$ .

$4 \sin (x) \cos (x) (1 - 2 \sin^{2} (x) + 2 - 12 \sin^{2} (x) + 24 \sin^{4} (x) - 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 1.2.1.14

Factor $4 \sin (x) \cos (x)$ out of $4 \sin (x) \cos (x) (1 - 2 \sin^{2} (x) + 2 - 12 \sin^{2} (x) + 24 \sin^{4} (x) - 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x))$ .

$4 \sin (x) \cos (x) (1 - 2 \sin^{2} (x) + 2 - 12 \sin^{2} (x) + 24 \sin^{4} (x) - 8 \sin^{2} (x) \cos^{2} (x) - 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 1.2.1.15

Factor $4 \sin (x) \cos (x)$ out of $4 \sin (x) \cos (x) (1 - 2 \sin^{2} (x) + 2 - 12 \sin^{2} (x) + 24 \sin^{4} (x) - 8 \sin^{2} (x) \cos^{2} (x) - 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$ .

$4 \sin (x) \cos (x) (1 - 2 \sin^{2} (x) + 2 - 12 \sin^{2} (x) + 24 \sin^{4} (x) - 8 \sin^{2} (x) \cos^{2} (x) - 16 \sin^{6} (x) + 16 \sin^{4} (x) \cos^{2} (x))$

Step 1.2.2

Reorder $- 2 \sin^{2} (x)$ and $2$ .

$4 \sin (x) \cos (x) (1 + 2 - 2 \sin^{2} (x) - 12 \sin^{2} (x) + 24 \sin^{4} (x) - 8 \sin^{2} (x) \cos^{2} (x) - 16 \sin^{6} (x) + 16 \sin^{4} (x) \cos^{2} (x))$

Step 1.2.3

Factor $2$ out of $2$ .

$4 \sin (x) \cos (x) (1 + 2 (1) - 2 \sin^{2} (x) - 12 \sin^{2} (x) + 24 \sin^{4} (x) - 8 \sin^{2} (x) \cos^{2} (x) - 16 \sin^{6} (x) + 16 \sin^{4} (x) \cos^{2} (x))$

Step 1.2.4

Factor $2$ out of $- 2 \sin^{2} (x)$ .

$4 \sin (x) \cos (x) (1 + 2 (1) + 2 (- \sin^{2} (x)) - 12 \sin^{2} (x) + 24 \sin^{4} (x) - 8 \sin^{2} (x) \cos^{2} (x) - 16 \sin^{6} (x) + 16 \sin^{4} (x) \cos^{2} (x))$

Step 1.2.5

Factor $2$ out of $2 (1) + 2 (- \sin^{2} (x))$ .

$4 \sin (x) \cos (x) (1 + 2 (1 - \sin^{2} (x)) - 12 \sin^{2} (x) + 24 \sin^{4} (x) - 8 \sin^{2} (x) \cos^{2} (x) - 16 \sin^{6} (x) + 16 \sin^{4} (x) \cos^{2} (x))$

Step 2

Apply pythagorean identity.

$4 \sin (x) \cos (x) (1 + 2 \cos^{2} (x) - 12 \sin^{2} (x) + 24 \sin^{4} (x) - 8 \sin^{2} (x) \cos^{2} (x) - 16 \sin^{6} (x) + 16 \sin^{4} (x) \cos^{2} (x))$

Step 3

Apply the distributive property.

$4 \sin (x) \cos (x) \cdot 1 + 4 \sin (x) \cos (x) (2 \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 12 \sin^{2} (x)) + 4 \sin (x) \cos (x) (24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4

Simplify.

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Step 4.1

Multiply $4$ by $1$ .

$4 \sin (x) \cos (x) + 4 \sin (x) \cos (x) (2 \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 12 \sin^{2} (x)) + 4 \sin (x) \cos (x) (24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.2

Multiply $\cos (x)$ by $\cos^{2} (x)$ by adding the exponents.

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Step 4.2.1

Move $\cos^{2} (x)$ .

$4 \sin (x) \cos (x) + 4 \sin (x) (\cos^{2} (x) \cos (x)) \cdot 2 + 4 \sin (x) \cos (x) (- 12 \sin^{2} (x)) + 4 \sin (x) \cos (x) (24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.2.2

Multiply $\cos^{2} (x)$ by $\cos (x)$ .

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Step 4.2.2.1

Raise $\cos (x)$ to the power of $1$ .

$4 \sin (x) \cos (x) + 4 \sin (x) (\cos^{2} (x) \cos^{1} (x)) \cdot 2 + 4 \sin (x) \cos (x) (- 12 \sin^{2} (x)) + 4 \sin (x) \cos (x) (24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.2.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) + 4 \sin (x) {\cos (x)}^{2 + 1} \cdot 2 + 4 \sin (x) \cos (x) (- 12 \sin^{2} (x)) + 4 \sin (x) \cos (x) (24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.2.3

Add $2$ and $1$ .

$4 \sin (x) \cos (x) + 4 \sin (x) \cos^{3} (x) \cdot 2 + 4 \sin (x) \cos (x) (- 12 \sin^{2} (x)) + 4 \sin (x) \cos (x) (24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.3

Multiply $\sin (x)$ by $\sin^{2} (x)$ by adding the exponents.

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Step 4.3.1

Move $\sin^{2} (x)$ .

$4 \sin (x) \cos (x) + 4 \sin (x) \cos^{3} (x) \cdot 2 + 4 (\sin^{2} (x) \sin (x)) \cos (x) \cdot - 12 + 4 \sin (x) \cos (x) (24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.3.2

Multiply $\sin^{2} (x)$ by $\sin (x)$ .

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Step 4.3.2.1

Raise $\sin (x)$ to the power of $1$ .

$4 \sin (x) \cos (x) + 4 \sin (x) \cos^{3} (x) \cdot 2 + 4 (\sin^{2} (x) \sin^{1} (x)) \cos (x) \cdot - 12 + 4 \sin (x) \cos (x) (24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.3.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) + 4 \sin (x) \cos^{3} (x) \cdot 2 + 4 {\sin (x)}^{2 + 1} \cos (x) \cdot - 12 + 4 \sin (x) \cos (x) (24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.3.3

Add $2$ and $1$ .

$4 \sin (x) \cos (x) + 4 \sin (x) \cos^{3} (x) \cdot 2 + 4 \sin^{3} (x) \cos (x) \cdot - 12 + 4 \sin (x) \cos (x) (24 \sin^{4} (x)) + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.4

Multiply $\sin (x)$ by $\sin^{4} (x)$ by adding the exponents.

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Step 4.4.1

Move $\sin^{4} (x)$ .

$4 \sin (x) \cos (x) + 4 \sin (x) \cos^{3} (x) \cdot 2 + 4 \sin^{3} (x) \cos (x) \cdot - 12 + 4 (\sin^{4} (x) \sin (x)) \cos (x) \cdot 24 + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.4.2

Multiply $\sin^{4} (x)$ by $\sin (x)$ .

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Step 4.4.2.1

Raise $\sin (x)$ to the power of $1$ .

$4 \sin (x) \cos (x) + 4 \sin (x) \cos^{3} (x) \cdot 2 + 4 \sin^{3} (x) \cos (x) \cdot - 12 + 4 (\sin^{4} (x) \sin^{1} (x)) \cos (x) \cdot 24 + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.4.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) + 4 \sin (x) \cos^{3} (x) \cdot 2 + 4 \sin^{3} (x) \cos (x) \cdot - 12 + 4 {\sin (x)}^{4 + 1} \cos (x) \cdot 24 + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.4.3

Add $4$ and $1$ .

$4 \sin (x) \cos (x) + 4 \sin (x) \cos^{3} (x) \cdot 2 + 4 \sin^{3} (x) \cos (x) \cdot - 12 + 4 \sin^{5} (x) \cos (x) \cdot 24 + 4 \sin (x) \cos (x) (- 8 \sin^{2} (x) \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.5

Multiply $\sin (x)$ by $\sin^{2} (x)$ by adding the exponents.

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Step 4.5.1

Move $\sin^{2} (x)$ .

$4 \sin (x) \cos (x) + 4 \sin (x) \cos^{3} (x) \cdot 2 + 4 \sin^{3} (x) \cos (x) \cdot - 12 + 4 \sin^{5} (x) \cos (x) \cdot 24 + 4 (\sin^{2} (x) \sin (x)) \cos (x) (- 8 \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.5.2

Multiply $\sin^{2} (x)$ by $\sin (x)$ .

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Step 4.5.2.1

Raise $\sin (x)$ to the power of $1$ .

$4 \sin (x) \cos (x) + 4 \sin (x) \cos^{3} (x) \cdot 2 + 4 \sin^{3} (x) \cos (x) \cdot - 12 + 4 \sin^{5} (x) \cos (x) \cdot 24 + 4 (\sin^{2} (x) \sin^{1} (x)) \cos (x) (- 8 \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.5.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) + 4 \sin (x) \cos^{3} (x) \cdot 2 + 4 \sin^{3} (x) \cos (x) \cdot - 12 + 4 \sin^{5} (x) \cos (x) \cdot 24 + 4 {\sin (x)}^{2 + 1} \cos (x) (- 8 \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.5.3

Add $2$ and $1$ .

$4 \sin (x) \cos (x) + 4 \sin (x) \cos^{3} (x) \cdot 2 + 4 \sin^{3} (x) \cos (x) \cdot - 12 + 4 \sin^{5} (x) \cos (x) \cdot 24 + 4 \sin^{3} (x) \cos (x) (- 8 \cos^{2} (x)) + 4 \sin (x) \cos (x) (- 16 \sin^{6} (x)) + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.6

Multiply $\sin (x)$ by $\sin^{6} (x)$ by adding the exponents.

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Step 4.6.1

Move $\sin^{6} (x)$ .

$4 \sin (x) \cos (x) + 4 \sin (x) \cos^{3} (x) \cdot 2 + 4 \sin^{3} (x) \cos (x) \cdot - 12 + 4 \sin^{5} (x) \cos (x) \cdot 24 + 4 \sin^{3} (x) \cos (x) (- 8 \cos^{2} (x)) + 4 (\sin^{6} (x) \sin (x)) \cos (x) \cdot - 16 + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.6.2

Multiply $\sin^{6} (x)$ by $\sin (x)$ .

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Step 4.6.2.1

Raise $\sin (x)$ to the power of $1$ .

$4 \sin (x) \cos (x) + 4 \sin (x) \cos^{3} (x) \cdot 2 + 4 \sin^{3} (x) \cos (x) \cdot - 12 + 4 \sin^{5} (x) \cos (x) \cdot 24 + 4 \sin^{3} (x) \cos (x) (- 8 \cos^{2} (x)) + 4 (\sin^{6} (x) \sin^{1} (x)) \cos (x) \cdot - 16 + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.6.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) + 4 \sin (x) \cos^{3} (x) \cdot 2 + 4 \sin^{3} (x) \cos (x) \cdot - 12 + 4 \sin^{5} (x) \cos (x) \cdot 24 + 4 \sin^{3} (x) \cos (x) (- 8 \cos^{2} (x)) + 4 {\sin (x)}^{6 + 1} \cos (x) \cdot - 16 + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.6.3

Add $6$ and $1$ .

$4 \sin (x) \cos (x) + 4 \sin (x) \cos^{3} (x) \cdot 2 + 4 \sin^{3} (x) \cos (x) \cdot - 12 + 4 \sin^{5} (x) \cos (x) \cdot 24 + 4 \sin^{3} (x) \cos (x) (- 8 \cos^{2} (x)) + 4 \sin^{7} (x) \cos (x) \cdot - 16 + 4 \sin (x) \cos (x) (16 \sin^{4} (x) \cos^{2} (x))$

Step 4.7

Multiply $\sin (x)$ by $\sin^{4} (x)$ by adding the exponents.

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Step 4.7.1

Move $\sin^{4} (x)$ .

Step 4.7.2

Multiply $\sin^{4} (x)$ by $\sin (x)$ .

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Step 4.7.2.1

Raise $\sin (x)$ to the power of $1$ .

Step 4.7.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

Step 4.7.3

Add $4$ and $1$ .

Step 5

Simplify each term.

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Step 5.1

Multiply $2$ by $4$ .

$4 \sin (x) \cos (x) + 8 \sin (x) \cos^{3} (x) + 4 \sin^{3} (x) \cos (x) \cdot - 12 + 4 \sin^{5} (x) \cos (x) \cdot 24 + 4 \sin^{3} (x) \cos (x) (- 8 \cos^{2} (x)) + 4 \sin^{7} (x) \cos (x) \cdot - 16 + 4 \sin^{5} (x) \cos (x) (16 \cos^{2} (x))$

Step 5.2

Multiply $- 12$ by $4$ .

$4 \sin (x) \cos (x) + 8 \sin (x) \cos^{3} (x) - 48 \sin^{3} (x) \cos (x) + 4 \sin^{5} (x) \cos (x) \cdot 24 + 4 \sin^{3} (x) \cos (x) (- 8 \cos^{2} (x)) + 4 \sin^{7} (x) \cos (x) \cdot - 16 + 4 \sin^{5} (x) \cos (x) (16 \cos^{2} (x))$

Step 5.3

Multiply $24$ by $4$ .

$4 \sin (x) \cos (x) + 8 \sin (x) \cos^{3} (x) - 48 \sin^{3} (x) \cos (x) + 96 \sin^{5} (x) \cos (x) + 4 \sin^{3} (x) \cos (x) (- 8 \cos^{2} (x)) + 4 \sin^{7} (x) \cos (x) \cdot - 16 + 4 \sin^{5} (x) \cos (x) (16 \cos^{2} (x))$

Step 5.4

Multiply $\cos (x)$ by $\cos^{2} (x)$ by adding the exponents.

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Step 5.4.1

Move $\cos^{2} (x)$ .

$4 \sin (x) \cos (x) + 8 \sin (x) \cos^{3} (x) - 48 \sin^{3} (x) \cos (x) + 96 \sin^{5} (x) \cos (x) + 4 \sin^{3} (x) (\cos^{2} (x) \cos (x)) \cdot - 8 + 4 \sin^{7} (x) \cos (x) \cdot - 16 + 4 \sin^{5} (x) \cos (x) (16 \cos^{2} (x))$

Step 5.4.2

Multiply $\cos^{2} (x)$ by $\cos (x)$ .

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Step 5.4.2.1

Raise $\cos (x)$ to the power of $1$ .

$4 \sin (x) \cos (x) + 8 \sin (x) \cos^{3} (x) - 48 \sin^{3} (x) \cos (x) + 96 \sin^{5} (x) \cos (x) + 4 \sin^{3} (x) (\cos^{2} (x) \cos^{1} (x)) \cdot - 8 + 4 \sin^{7} (x) \cos (x) \cdot - 16 + 4 \sin^{5} (x) \cos (x) (16 \cos^{2} (x))$

Step 5.4.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) + 8 \sin (x) \cos^{3} (x) - 48 \sin^{3} (x) \cos (x) + 96 \sin^{5} (x) \cos (x) + 4 \sin^{3} (x) {\cos (x)}^{2 + 1} \cdot - 8 + 4 \sin^{7} (x) \cos (x) \cdot - 16 + 4 \sin^{5} (x) \cos (x) (16 \cos^{2} (x))$

Step 5.4.3

Add $2$ and $1$ .

$4 \sin (x) \cos (x) + 8 \sin (x) \cos^{3} (x) - 48 \sin^{3} (x) \cos (x) + 96 \sin^{5} (x) \cos (x) + 4 \sin^{3} (x) \cos^{3} (x) \cdot - 8 + 4 \sin^{7} (x) \cos (x) \cdot - 16 + 4 \sin^{5} (x) \cos (x) (16 \cos^{2} (x))$

Step 5.5

Multiply $- 8$ by $4$ .

$4 \sin (x) \cos (x) + 8 \sin (x) \cos^{3} (x) - 48 \sin^{3} (x) \cos (x) + 96 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) + 4 \sin^{7} (x) \cos (x) \cdot - 16 + 4 \sin^{5} (x) \cos (x) (16 \cos^{2} (x))$

Step 5.6

Multiply $- 16$ by $4$ .

$4 \sin (x) \cos (x) + 8 \sin (x) \cos^{3} (x) - 48 \sin^{3} (x) \cos (x) + 96 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 64 \sin^{7} (x) \cos (x) + 4 \sin^{5} (x) \cos (x) (16 \cos^{2} (x))$

Step 5.7

Multiply $\cos (x)$ by $\cos^{2} (x)$ by adding the exponents.

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Step 5.7.1

Move $\cos^{2} (x)$ .

$4 \sin (x) \cos (x) + 8 \sin (x) \cos^{3} (x) - 48 \sin^{3} (x) \cos (x) + 96 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 64 \sin^{7} (x) \cos (x) + 4 \sin^{5} (x) (\cos^{2} (x) \cos (x)) \cdot 16$

Step 5.7.2

Multiply $\cos^{2} (x)$ by $\cos (x)$ .

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Step 5.7.2.1

Raise $\cos (x)$ to the power of $1$ .

Step 5.7.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 \sin (x) \cos (x) + 8 \sin (x) \cos^{3} (x) - 48 \sin^{3} (x) \cos (x) + 96 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 64 \sin^{7} (x) \cos (x) + 4 \sin^{5} (x) {\cos (x)}^{2 + 1} \cdot 16$

Step 5.7.3

Add $2$ and $1$ .

$4 \sin (x) \cos (x) + 8 \sin (x) \cos^{3} (x) - 48 \sin^{3} (x) \cos (x) + 96 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 64 \sin^{7} (x) \cos (x) + 4 \sin^{5} (x) \cos^{3} (x) \cdot 16$

Step 5.8

Multiply $16$ by $4$ .

$4 \sin (x) \cos (x) + 8 \sin (x) \cos^{3} (x) - 48 \sin^{3} (x) \cos (x) + 96 \sin^{5} (x) \cos (x) - 32 \sin^{3} (x) \cos^{3} (x) - 64 \sin^{7} (x) \cos (x) + 64 \sin^{5} (x) \cos^{3} (x)$