Trigonometry Examples

$(- 2 m^{2} + 6 n^{2} - 7 n) (6 m^{2} - 7 m + 5 n - 6 m^{2} + 4 n^{2})$

Step 1

Combine the opposite terms in $6 m^{2} - 7 m + 5 n - 6 m^{2} + 4 n^{2}$ .

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Step 1.1

Subtract $6 m^{2}$ from $6 m^{2}$ .

$(- 2 m^{2} + 6 n^{2} - 7 n) (- 7 m + 5 n + 0 + 4 n^{2})$

Step 1.2

Add $- 7 m + 5 n$ and $0$ .

$(- 2 m^{2} + 6 n^{2} - 7 n) (- 7 m + 5 n + 4 n^{2})$

Step 2

Expand $(- 2 m^{2} + 6 n^{2} - 7 n) (- 7 m + 5 n + 4 n^{2})$ by multiplying each term in the first expression by each term in the second expression.

$- 2 m^{2} (- 7 m) - 2 m^{2} (5 n) - 2 m^{2} (4 n^{2}) + 6 n^{2} (- 7 m) + 6 n^{2} (5 n) + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3

Simplify terms.

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Step 3.1

Simplify each term.

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Step 3.1.1

Rewrite using the commutative property of multiplication.

$- 2 \cdot - 7 m^{2} m - 2 m^{2} (5 n) - 2 m^{2} (4 n^{2}) + 6 n^{2} (- 7 m) + 6 n^{2} (5 n) + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.2

Multiply $m^{2}$ by $m$ by adding the exponents.

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Step 3.1.2.1

Move $m$ .

$- 2 \cdot - 7 (m \cdot m^{2}) - 2 m^{2} (5 n) - 2 m^{2} (4 n^{2}) + 6 n^{2} (- 7 m) + 6 n^{2} (5 n) + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.2.2

Multiply $m$ by $m^{2}$ .

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Step 3.1.2.2.1

Raise $m$ to the power of $1$ .

$- 2 \cdot - 7 (m^{1} m^{2}) - 2 m^{2} (5 n) - 2 m^{2} (4 n^{2}) + 6 n^{2} (- 7 m) + 6 n^{2} (5 n) + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.2.2.2

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

$- 2 \cdot - 7 m^{1 + 2} - 2 m^{2} (5 n) - 2 m^{2} (4 n^{2}) + 6 n^{2} (- 7 m) + 6 n^{2} (5 n) + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.2.3

Add $1$ and $2$ .

$- 2 \cdot - 7 m^{3} - 2 m^{2} (5 n) - 2 m^{2} (4 n^{2}) + 6 n^{2} (- 7 m) + 6 n^{2} (5 n) + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.3

Multiply $- 2$ by $- 7$ .

$14 m^{3} - 2 m^{2} (5 n) - 2 m^{2} (4 n^{2}) + 6 n^{2} (- 7 m) + 6 n^{2} (5 n) + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.4

Rewrite using the commutative property of multiplication.

$14 m^{3} - 2 \cdot 5 m^{2} n - 2 m^{2} (4 n^{2}) + 6 n^{2} (- 7 m) + 6 n^{2} (5 n) + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.5

Multiply $- 2$ by $5$ .

$14 m^{3} - 10 m^{2} n - 2 m^{2} (4 n^{2}) + 6 n^{2} (- 7 m) + 6 n^{2} (5 n) + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.6

Rewrite using the commutative property of multiplication.

$14 m^{3} - 10 m^{2} n - 2 \cdot 4 m^{2} n^{2} + 6 n^{2} (- 7 m) + 6 n^{2} (5 n) + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.7

Multiply $- 2$ by $4$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} + 6 n^{2} (- 7 m) + 6 n^{2} (5 n) + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.8

Rewrite using the commutative property of multiplication.

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} + 6 \cdot - 7 n^{2} m + 6 n^{2} (5 n) + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.9

Multiply $6$ by $- 7$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 6 n^{2} (5 n) + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.10

Rewrite using the commutative property of multiplication.

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 6 \cdot 5 n^{2} n + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.11

Multiply $n^{2}$ by $n$ by adding the exponents.

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Step 3.1.11.1

Move $n$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 6 \cdot 5 (n \cdot n^{2}) + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.11.2

Multiply $n$ by $n^{2}$ .

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Step 3.1.11.2.1

Raise $n$ to the power of $1$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 6 \cdot 5 (n^{1} n^{2}) + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.11.2.2

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

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 6 \cdot 5 n^{1 + 2} + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.11.3

Add $1$ and $2$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 6 \cdot 5 n^{3} + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.12

Multiply $6$ by $5$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 6 n^{2} (4 n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.13

Rewrite using the commutative property of multiplication.

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 6 \cdot 4 n^{2} n^{2} - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.14

Multiply $n^{2}$ by $n^{2}$ by adding the exponents.

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Step 3.1.14.1

Move $n^{2}$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 6 \cdot 4 (n^{2} n^{2}) - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.14.2

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

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 6 \cdot 4 n^{2 + 2} - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.14.3

Add $2$ and $2$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 6 \cdot 4 n^{4} - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.15

Multiply $6$ by $4$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 24 n^{4} - 7 n (- 7 m) - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.16

Rewrite using the commutative property of multiplication.

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 24 n^{4} - 7 \cdot - 7 n m - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.17

Multiply $- 7$ by $- 7$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 24 n^{4} + 49 n m - 7 n (5 n) - 7 n (4 n^{2})$

Step 3.1.18

Rewrite using the commutative property of multiplication.

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 24 n^{4} + 49 n m - 7 \cdot 5 n \cdot n - 7 n (4 n^{2})$

Step 3.1.19

Multiply $n$ by $n$ by adding the exponents.

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Step 3.1.19.1

Move $n$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 24 n^{4} + 49 n m - 7 \cdot 5 (n \cdot n) - 7 n (4 n^{2})$

Step 3.1.19.2

Multiply $n$ by $n$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 24 n^{4} + 49 n m - 7 \cdot 5 n^{2} - 7 n (4 n^{2})$

Step 3.1.20

Multiply $- 7$ by $5$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 24 n^{4} + 49 n m - 35 n^{2} - 7 n (4 n^{2})$

Step 3.1.21

Rewrite using the commutative property of multiplication.

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 24 n^{4} + 49 n m - 35 n^{2} - 7 \cdot 4 n \cdot n^{2}$

Step 3.1.22

Multiply $n$ by $n^{2}$ by adding the exponents.

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Step 3.1.22.1

Move $n^{2}$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 24 n^{4} + 49 n m - 35 n^{2} - 7 \cdot 4 (n^{2} n)$

Step 3.1.22.2

Multiply $n^{2}$ by $n$ .

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Step 3.1.22.2.1

Raise $n$ to the power of $1$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 24 n^{4} + 49 n m - 35 n^{2} - 7 \cdot 4 (n^{2} n^{1})$

Step 3.1.22.2.2

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

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 24 n^{4} + 49 n m - 35 n^{2} - 7 \cdot 4 n^{2 + 1}$

Step 3.1.22.3

Add $2$ and $1$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 24 n^{4} + 49 n m - 35 n^{2} - 7 \cdot 4 n^{3}$

Step 3.1.23

Multiply $- 7$ by $4$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 30 n^{3} + 24 n^{4} + 49 n m - 35 n^{2} - 28 n^{3}$

Step 3.2

Simplify by adding terms.

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Step 3.2.1

Subtract $28 n^{3}$ from $30 n^{3}$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 n^{2} m + 2 n^{3} + 24 n^{4} + 49 n m - 35 n^{2}$

Step 3.2.2

Reorder.

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Step 3.2.2.1

Move $n^{2}$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 m n^{2} + 2 n^{3} + 24 n^{4} + 49 n m - 35 n^{2}$

Step 3.2.2.2

Move $n$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 m n^{2} + 2 n^{3} + 24 n^{4} + 49 m n - 35 n^{2}$

Step 3.2.2.3

Move $2 n^{3}$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} - 42 m n^{2} + 24 n^{4} + 2 n^{3} + 49 m n - 35 n^{2}$

Step 3.2.2.4

Move $- 42 m n^{2}$ .

$14 m^{3} - 10 m^{2} n - 8 m^{2} n^{2} + 24 n^{4} - 42 m n^{2} + 2 n^{3} + 49 m n - 35 n^{2}$

Step 3.2.2.5

Move $- 10 m^{2} n$ .

$14 m^{3} - 8 m^{2} n^{2} + 24 n^{4} - 10 m^{2} n - 42 m n^{2} + 2 n^{3} + 49 m n - 35 n^{2}$

Step 3.2.2.6

Move $14 m^{3}$ .

$- 8 m^{2} n^{2} + 24 n^{4} + 14 m^{3} - 10 m^{2} n - 42 m n^{2} + 2 n^{3} + 49 m n - 35 n^{2}$