Algebra Examples

{(5 x - 2)}^{2}

${(5 x - 2)}^{2}$

Step 1

Rewrite

{(5 x - 2)}^{2}

${(5 x - 2)}^{2}$ as

(5 x - 2) (5 x - 2)

$(5 x - 2) (5 x - 2)$ .

(5 x - 2) (5 x - 2)

$(5 x - 2) (5 x - 2)$

Step 2

Expand

(5 x - 2) (5 x - 2)

$(5 x - 2) (5 x - 2)$ using the FOIL Method.

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Step 2.1

Apply the distributive property.

5 x (5 x - 2) - 2 (5 x - 2)

$5 x (5 x - 2) - 2 (5 x - 2)$

Step 2.2

Apply the distributive property.

5 x (5 x) + 5 x \cdot - 2 - 2 (5 x - 2)

$5 x (5 x) + 5 x \cdot - 2 - 2 (5 x - 2)$

Step 2.3

Apply the distributive property.

5 x (5 x) + 5 x \cdot - 2 - 2 (5 x) - 2 \cdot - 2

$5 x (5 x) + 5 x \cdot - 2 - 2 (5 x) - 2 \cdot - 2$

5 x (5 x) + 5 x \cdot - 2 - 2 (5 x) - 2 \cdot - 2

$5 x (5 x) + 5 x \cdot - 2 - 2 (5 x) - 2 \cdot - 2$

Step 3

Simplify and combine like 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.

5 \cdot 5 x \cdot x + 5 x \cdot - 2 - 2 (5 x) - 2 \cdot - 2

$5 \cdot 5 x \cdot x + 5 x \cdot - 2 - 2 (5 x) - 2 \cdot - 2$

Step 3.1.2

Multiply

x

$x$ by

x

$x$ by adding the exponents.

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Step 3.1.2.1

Move

x

$x$ .

5 \cdot 5 (x \cdot x) + 5 x \cdot - 2 - 2 (5 x) - 2 \cdot - 2

$5 \cdot 5 (x \cdot x) + 5 x \cdot - 2 - 2 (5 x) - 2 \cdot - 2$

Step 3.1.2.2

Multiply

x

$x$ by

x

$x$ .

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

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

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

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

Step 3.1.3

Multiply

5

$5$ by

5

$5$ .

25 x^{2} + 5 x \cdot - 2 - 2 (5 x) - 2 \cdot - 2

$25 x^{2} + 5 x \cdot - 2 - 2 (5 x) - 2 \cdot - 2$

Step 3.1.4

Multiply

- 2

$- 2$ by

5

$5$ .

25 x^{2} - 10 x - 2 (5 x) - 2 \cdot - 2

$25 x^{2} - 10 x - 2 (5 x) - 2 \cdot - 2$

Step 3.1.5

Multiply

5

$5$ by

- 2

$- 2$ .

25 x^{2} - 10 x - 10 x - 2 \cdot - 2

$25 x^{2} - 10 x - 10 x - 2 \cdot - 2$

Step 3.1.6

Multiply

- 2

$- 2$ by

- 2

$- 2$ .

25 x^{2} - 10 x - 10 x + 4

$25 x^{2} - 10 x - 10 x + 4$

25 x^{2} - 10 x - 10 x + 4

$25 x^{2} - 10 x - 10 x + 4$

Step 3.2

Subtract

10 x

$10 x$ from

- 10 x

$- 10 x$ .

25 x^{2} - 20 x + 4

$25 x^{2} - 20 x + 4$

25 x^{2} - 20 x + 4

$25 x^{2} - 20 x + 4$