Algebra Examples

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

Step 1

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

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

Step 2

Simplify terms.

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Step 2.1

Simplify each term.

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Step 2.1.1

Multiply $x^{2}$ by $x^{4}$ by adding the exponents.

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Step 2.1.1.1

Move $x^{4}$ .

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

Step 2.1.1.2

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

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

Step 2.1.1.3

Add $4$ and $2$ .

$4 x^{6} + 4 x^{2} (3 x^{2}) + 4 x^{2} (4 x) - 8 x \cdot x^{4} - 8 x (3 x^{2}) - 8 x (4 x) - 2 x^{4} - 2 (3 x^{2}) - 2 (4 x)$

Step 2.1.2

Rewrite using the commutative property of multiplication.

$4 x^{6} + 4 \cdot 3 x^{2} x^{2} + 4 x^{2} (4 x) - 8 x \cdot x^{4} - 8 x (3 x^{2}) - 8 x (4 x) - 2 x^{4} - 2 (3 x^{2}) - 2 (4 x)$

Step 2.1.3

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

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Step 2.1.3.1

Move $x^{2}$ .

$4 x^{6} + 4 \cdot 3 (x^{2} x^{2}) + 4 x^{2} (4 x) - 8 x \cdot x^{4} - 8 x (3 x^{2}) - 8 x (4 x) - 2 x^{4} - 2 (3 x^{2}) - 2 (4 x)$

Step 2.1.3.2

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

$4 x^{6} + 4 \cdot 3 x^{2 + 2} + 4 x^{2} (4 x) - 8 x \cdot x^{4} - 8 x (3 x^{2}) - 8 x (4 x) - 2 x^{4} - 2 (3 x^{2}) - 2 (4 x)$

Step 2.1.3.3

Add $2$ and $2$ .

$4 x^{6} + 4 \cdot 3 x^{4} + 4 x^{2} (4 x) - 8 x \cdot x^{4} - 8 x (3 x^{2}) - 8 x (4 x) - 2 x^{4} - 2 (3 x^{2}) - 2 (4 x)$

Step 2.1.4

Multiply $4$ by $3$ .

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

Step 2.1.5

Rewrite using the commutative property of multiplication.

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

Step 2.1.6

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

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Step 2.1.6.1

Move $x$ .

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

Step 2.1.6.2

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

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Step 2.1.6.2.1

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

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

Step 2.1.6.2.2

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

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

Step 2.1.6.3

Add $1$ and $2$ .

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

Step 2.1.7

Multiply $4$ by $4$ .

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

Step 2.1.8

Multiply $x$ by $x^{4}$ by adding the exponents.

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Step 2.1.8.1

Move $x^{4}$ .

$4 x^{6} + 12 x^{4} + 16 x^{3} - 8 (x^{4} x) - 8 x (3 x^{2}) - 8 x (4 x) - 2 x^{4} - 2 (3 x^{2}) - 2 (4 x)$

Step 2.1.8.2

Multiply $x^{4}$ by $x$ .

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Step 2.1.8.2.1

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

$4 x^{6} + 12 x^{4} + 16 x^{3} - 8 (x^{4} x^{1}) - 8 x (3 x^{2}) - 8 x (4 x) - 2 x^{4} - 2 (3 x^{2}) - 2 (4 x)$

Step 2.1.8.2.2

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

$4 x^{6} + 12 x^{4} + 16 x^{3} - 8 x^{4 + 1} - 8 x (3 x^{2}) - 8 x (4 x) - 2 x^{4} - 2 (3 x^{2}) - 2 (4 x)$

Step 2.1.8.3

Add $4$ and $1$ .

$4 x^{6} + 12 x^{4} + 16 x^{3} - 8 x^{5} - 8 x (3 x^{2}) - 8 x (4 x) - 2 x^{4} - 2 (3 x^{2}) - 2 (4 x)$

Step 2.1.9

Rewrite using the commutative property of multiplication.

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

Step 2.1.10

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

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Step 2.1.10.1

Move $x^{2}$ .

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

Step 2.1.10.2

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

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Step 2.1.10.2.1

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

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

Step 2.1.10.2.2

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

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

Step 2.1.10.3

Add $2$ and $1$ .

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

Step 2.1.11

Multiply $- 8$ by $3$ .

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

Step 2.1.12

Rewrite using the commutative property of multiplication.

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

Step 2.1.13

Multiply $x$ by $x$ by adding the exponents.

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Step 2.1.13.1

Move $x$ .

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

Step 2.1.13.2

Multiply $x$ by $x$ .

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

Step 2.1.14

Multiply $- 8$ by $4$ .

$4 x^{6} + 12 x^{4} + 16 x^{3} - 8 x^{5} - 24 x^{3} - 32 x^{2} - 2 x^{4} - 2 (3 x^{2}) - 2 (4 x)$

Step 2.1.15

Multiply $3$ by $- 2$ .

$4 x^{6} + 12 x^{4} + 16 x^{3} - 8 x^{5} - 24 x^{3} - 32 x^{2} - 2 x^{4} - 6 x^{2} - 2 (4 x)$

Step 2.1.16

Multiply $4$ by $- 2$ .

$4 x^{6} + 12 x^{4} + 16 x^{3} - 8 x^{5} - 24 x^{3} - 32 x^{2} - 2 x^{4} - 6 x^{2} - 8 x$

Step 2.2

Simplify by adding terms.

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Step 2.2.1

Subtract $2 x^{4}$ from $12 x^{4}$ .

$4 x^{6} + 10 x^{4} + 16 x^{3} - 8 x^{5} - 24 x^{3} - 32 x^{2} - 6 x^{2} - 8 x$

Step 2.2.2

Subtract $24 x^{3}$ from $16 x^{3}$ .

$4 x^{6} + 10 x^{4} - 8 x^{5} - 8 x^{3} - 32 x^{2} - 6 x^{2} - 8 x$

Step 2.2.3

Subtract $6 x^{2}$ from $- 32 x^{2}$ .

$4 x^{6} + 10 x^{4} - 8 x^{5} - 8 x^{3} - 38 x^{2} - 8 x$