Algebra Examples

$(x^{2} + 5 x - 1) (5 x^{2} - 6 x + 1)$

Step 1

Expand $(x^{2} + 5 x - 1) (5 x^{2} - 6 x + 1)$ by multiplying each term in the first expression by each term in the second expression.

$x^{2} (5 x^{2}) + x^{2} (- 6 x) + x^{2} \cdot 1 + 5 x (5 x^{2}) + 5 x (- 6 x) + 5 x \cdot 1 - 1 (5 x^{2}) - 1 (- 6 x) - 1 \cdot 1$

Step 2

Simplify terms.

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Step 2.1

Simplify each term.

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Step 2.1.1

Rewrite using the commutative property of multiplication.

$5 x^{2} x^{2} + x^{2} (- 6 x) + x^{2} \cdot 1 + 5 x (5 x^{2}) + 5 x (- 6 x) + 5 x \cdot 1 - 1 (5 x^{2}) - 1 (- 6 x) - 1 \cdot 1$

Step 2.1.2

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

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Step 2.1.2.1

Move $x^{2}$ .

$5 (x^{2} x^{2}) + x^{2} (- 6 x) + x^{2} \cdot 1 + 5 x (5 x^{2}) + 5 x (- 6 x) + 5 x \cdot 1 - 1 (5 x^{2}) - 1 (- 6 x) - 1 \cdot 1$

Step 2.1.2.2

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

$5 x^{2 + 2} + x^{2} (- 6 x) + x^{2} \cdot 1 + 5 x (5 x^{2}) + 5 x (- 6 x) + 5 x \cdot 1 - 1 (5 x^{2}) - 1 (- 6 x) - 1 \cdot 1$

Step 2.1.2.3

Add $2$ and $2$ .

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

Step 2.1.3

Rewrite using the commutative property of multiplication.

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

Step 2.1.4

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

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Step 2.1.4.1

Move $x$ .

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

Step 2.1.4.2

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

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Step 2.1.4.2.1

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

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

Step 2.1.4.2.2

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

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

Step 2.1.4.3

Add $1$ and $2$ .

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

Step 2.1.5

Multiply $x^{2}$ by $1$ .

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

Step 2.1.6

Rewrite using the commutative property of multiplication.

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

Step 2.1.7

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

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Step 2.1.7.1

Move $x^{2}$ .

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

Step 2.1.7.2

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

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Step 2.1.7.2.1

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

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

Step 2.1.7.2.2

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

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

Step 2.1.7.3

Add $2$ and $1$ .

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

Step 2.1.8

Multiply $5$ by $5$ .

$5 x^{4} - 6 x^{3} + x^{2} + 25 x^{3} + 5 x (- 6 x) + 5 x \cdot 1 - 1 (5 x^{2}) - 1 (- 6 x) - 1 \cdot 1$

Step 2.1.9

Rewrite using the commutative property of multiplication.

$5 x^{4} - 6 x^{3} + x^{2} + 25 x^{3} + 5 \cdot - 6 x \cdot x + 5 x \cdot 1 - 1 (5 x^{2}) - 1 (- 6 x) - 1 \cdot 1$

Step 2.1.10

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

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Step 2.1.10.1

Move $x$ .

$5 x^{4} - 6 x^{3} + x^{2} + 25 x^{3} + 5 \cdot - 6 (x \cdot x) + 5 x \cdot 1 - 1 (5 x^{2}) - 1 (- 6 x) - 1 \cdot 1$

Step 2.1.10.2

Multiply $x$ by $x$ .

$5 x^{4} - 6 x^{3} + x^{2} + 25 x^{3} + 5 \cdot - 6 x^{2} + 5 x \cdot 1 - 1 (5 x^{2}) - 1 (- 6 x) - 1 \cdot 1$

Step 2.1.11

Multiply $5$ by $- 6$ .

$5 x^{4} - 6 x^{3} + x^{2} + 25 x^{3} - 30 x^{2} + 5 x \cdot 1 - 1 (5 x^{2}) - 1 (- 6 x) - 1 \cdot 1$

Step 2.1.12

Multiply $5$ by $1$ .

$5 x^{4} - 6 x^{3} + x^{2} + 25 x^{3} - 30 x^{2} + 5 x - 1 (5 x^{2}) - 1 (- 6 x) - 1 \cdot 1$

Step 2.1.13

Multiply $5$ by $- 1$ .

$5 x^{4} - 6 x^{3} + x^{2} + 25 x^{3} - 30 x^{2} + 5 x - 5 x^{2} - 1 (- 6 x) - 1 \cdot 1$

Step 2.1.14

Multiply $- 6$ by $- 1$ .

$5 x^{4} - 6 x^{3} + x^{2} + 25 x^{3} - 30 x^{2} + 5 x - 5 x^{2} + 6 x - 1 \cdot 1$

Step 2.1.15

Multiply $- 1$ by $1$ .

$5 x^{4} - 6 x^{3} + x^{2} + 25 x^{3} - 30 x^{2} + 5 x - 5 x^{2} + 6 x - 1$

Step 2.2

Simplify by adding terms.

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Step 2.2.1

Add $- 6 x^{3}$ and $25 x^{3}$ .

$5 x^{4} + 19 x^{3} + x^{2} - 30 x^{2} + 5 x - 5 x^{2} + 6 x - 1$

Step 2.2.2

Subtract $30 x^{2}$ from $x^{2}$ .

$5 x^{4} + 19 x^{3} - 29 x^{2} + 5 x - 5 x^{2} + 6 x - 1$

Step 2.2.3

Subtract $5 x^{2}$ from $- 29 x^{2}$ .

$5 x^{4} + 19 x^{3} - 34 x^{2} + 5 x + 6 x - 1$

Step 2.2.4

Add $5 x$ and $6 x$ .

$5 x^{4} + 19 x^{3} - 34 x^{2} + 11 x - 1$