Examples

x^{2} + x + 1

$x^{2} + x + 1$ ,

x^{2} + 8 x + 1

$x^{2} + 8 x + 1$

Step 1

Multiply the expressions.

(x^{2} + x + 1) \cdot (x^{2} + 8 x + 1)

$(x^{2} + x + 1) \cdot (x^{2} + 8 x + 1)$

Step 2

Expand

(x^{2} + x + 1) (x^{2} + 8 x + 1)

$(x^{2} + x + 1) (x^{2} + 8 x + 1)$ by multiplying each term in the first expression by each term in the second expression.

x^{2} x^{2} + x^{2} (8 x) + x^{2} \cdot 1 + x \cdot x^{2} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

$x^{2} x^{2} + x^{2} (8 x) + x^{2} \cdot 1 + x \cdot x^{2} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1$

Step 3

Simplify terms.

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Step 3.1

Simplify each term.

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Step 3.1.1

Multiply

x^{2}

$x^{2}$ by

x^{2}

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

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Step 3.1.1.1

Use the power rule

a^{m} a^{n} = a^{m + n}

$a^{m} a^{n} = a^{m + n}$ to combine exponents.

x^{2 + 2} + x^{2} (8 x) + x^{2} \cdot 1 + x \cdot x^{2} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

$x^{2 + 2} + x^{2} (8 x) + x^{2} \cdot 1 + x \cdot x^{2} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1$

Step 3.1.1.2

Add

2

$2$ and

2

$2$ .

x^{4} + x^{2} (8 x) + x^{2} \cdot 1 + x \cdot x^{2} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

x^{4} + x^{2} (8 x) + x^{2} \cdot 1 + x \cdot x^{2} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

Step 3.1.2

Rewrite using the commutative property of multiplication.

x^{4} + 8 x^{2} x + x^{2} \cdot 1 + x \cdot x^{2} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

Step 3.1.3

Multiply

x^{2}

$x^{2}$ by

x

$x$ by adding the exponents.

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Step 3.1.3.1

Move

x

$x$ .

x^{4} + 8 (x \cdot x^{2}) + x^{2} \cdot 1 + x \cdot x^{2} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

Step 3.1.3.2

Multiply

x

$x$ by

x^{2}

$x^{2}$ .

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Step 3.1.3.2.1

Raise

x

$x$ to the power of

1

$1$ .

x^{4} + 8 (x^{1} x^{2}) + x^{2} \cdot 1 + x \cdot x^{2} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

Step 3.1.3.2.2

Use the power rule

a^{m} a^{n} = a^{m + n}

$a^{m} a^{n} = a^{m + n}$ to combine exponents.

x^{4} + 8 x^{1 + 2} + x^{2} \cdot 1 + x \cdot x^{2} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

x^{4} + 8 x^{1 + 2} + x^{2} \cdot 1 + x \cdot x^{2} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

Step 3.1.3.3

Add

1

$1$ and

2

$2$ .

x^{4} + 8 x^{3} + x^{2} \cdot 1 + x \cdot x^{2} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

x^{4} + 8 x^{3} + x^{2} \cdot 1 + x \cdot x^{2} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

Step 3.1.4

Multiply

x^{2}

$x^{2}$ by

1

$1$ .

x^{4} + 8 x^{3} + x^{2} + x \cdot x^{2} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

Step 3.1.5

Multiply

x

$x$ by

x^{2}

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

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Step 3.1.5.1

Multiply

x

$x$ by

x^{2}

$x^{2}$ .

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Step 3.1.5.1.1

Raise

x

$x$ to the power of

1

$1$ .

x^{4} + 8 x^{3} + x^{2} + x^{1} x^{2} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

Step 3.1.5.1.2

Use the power rule

a^{m} a^{n} = a^{m + n}

$a^{m} a^{n} = a^{m + n}$ to combine exponents.

x^{4} + 8 x^{3} + x^{2} + x^{1 + 2} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

x^{4} + 8 x^{3} + x^{2} + x^{1 + 2} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

Step 3.1.5.2

Add

1

$1$ and

2

$2$ .

x^{4} + 8 x^{3} + x^{2} + x^{3} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

x^{4} + 8 x^{3} + x^{2} + x^{3} + x (8 x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

Step 3.1.6

Rewrite using the commutative property of multiplication.

x^{4} + 8 x^{3} + x^{2} + x^{3} + 8 x \cdot x + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

Step 3.1.7

Multiply

x

$x$ by

x

$x$ by adding the exponents.

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Step 3.1.7.1

Move

x

$x$ .

x^{4} + 8 x^{3} + x^{2} + x^{3} + 8 (x \cdot x) + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

Step 3.1.7.2

Multiply

x

$x$ by

x

$x$ .

x^{4} + 8 x^{3} + x^{2} + x^{3} + 8 x^{2} + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

x^{4} + 8 x^{3} + x^{2} + x^{3} + 8 x^{2} + x \cdot 1 + 1 x^{2} + 1 (8 x) + 1 \cdot 1

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

Step 3.1.8

Multiply

x

$x$ by

$1$ .

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

Step 3.1.9

Multiply

$x^{2}$ by

$1$ .

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

Step 3.1.10

Multiply

$8 x$ by

$1$ .

$x^{4} + 8 x^{3} + x^{2} + x^{3} + 8 x^{2} + x + x^{2} + 8 x + 1 \cdot 1$

Step 3.1.11

Multiply

$1$ by

$1$ .

$x^{4} + 8 x^{3} + x^{2} + x^{3} + 8 x^{2} + x + x^{2} + 8 x + 1$

Step 3.2

Simplify by adding terms.

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Step 3.2.1

Add

$8 x^{3}$ and

$x^{3}$ .

$x^{4} + 9 x^{3} + x^{2} + 8 x^{2} + x + x^{2} + 8 x + 1$

Step 3.2.2

Add

$x^{2}$ and

$8 x^{2}$ .

$x^{4} + 9 x^{3} + 9 x^{2} + x + x^{2} + 8 x + 1$

Step 3.2.3

Add

$9 x^{2}$ and

$x^{2}$ .

$x^{4} + 9 x^{3} + 10 x^{2} + x + 8 x + 1$

Step 3.2.4

Add

$x$ and

$8 x$ .

$x^{4} + 9 x^{3} + 10 x^{2} + 9 x + 1$

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