Algebra Examples

${(x^{2} - 25)}^{3} - 15 {(x^{2} - 25)}^{2} + 75 (x^{2} - 25) - 125$

Step 1

Simplify each term.

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Step 1.1

Use the Binomial Theorem.

${(x^{2})}^{3} + 3 {(x^{2})}^{2} \cdot - 25 + 3 x^{2} {(- 25)}^{2} + {(- 25)}^{3} - 15 {(x^{2} - 25)}^{2} + 75 (x^{2} - 25) - 125$

Step 1.2

Simplify each term.

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Step 1.2.1

Multiply the exponents in ${(x^{2})}^{3}$ .

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Step 1.2.1.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$x^{2 \cdot 3} + 3 {(x^{2})}^{2} \cdot - 25 + 3 x^{2} {(- 25)}^{2} + {(- 25)}^{3} - 15 {(x^{2} - 25)}^{2} + 75 (x^{2} - 25) - 125$

Step 1.2.1.2

Multiply $2$ by $3$ .

$x^{6} + 3 {(x^{2})}^{2} \cdot - 25 + 3 x^{2} {(- 25)}^{2} + {(- 25)}^{3} - 15 {(x^{2} - 25)}^{2} + 75 (x^{2} - 25) - 125$

Step 1.2.2

Multiply the exponents in ${(x^{2})}^{2}$ .

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Step 1.2.2.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$x^{6} + 3 x^{2 \cdot 2} \cdot - 25 + 3 x^{2} {(- 25)}^{2} + {(- 25)}^{3} - 15 {(x^{2} - 25)}^{2} + 75 (x^{2} - 25) - 125$

Step 1.2.2.2

Multiply $2$ by $2$ .

$x^{6} + 3 x^{4} \cdot - 25 + 3 x^{2} {(- 25)}^{2} + {(- 25)}^{3} - 15 {(x^{2} - 25)}^{2} + 75 (x^{2} - 25) - 125$

Step 1.2.3

Multiply $- 25$ by $3$ .

$x^{6} - 75 x^{4} + 3 x^{2} {(- 25)}^{2} + {(- 25)}^{3} - 15 {(x^{2} - 25)}^{2} + 75 (x^{2} - 25) - 125$

Step 1.2.4

Raise $- 25$ to the power of $2$ .

$x^{6} - 75 x^{4} + 3 x^{2} \cdot 625 + {(- 25)}^{3} - 15 {(x^{2} - 25)}^{2} + 75 (x^{2} - 25) - 125$

Step 1.2.5

Multiply $625$ by $3$ .

$x^{6} - 75 x^{4} + 1875 x^{2} + {(- 25)}^{3} - 15 {(x^{2} - 25)}^{2} + 75 (x^{2} - 25) - 125$

Step 1.2.6

Raise $- 25$ to the power of $3$ .

$x^{6} - 75 x^{4} + 1875 x^{2} - 15625 - 15 {(x^{2} - 25)}^{2} + 75 (x^{2} - 25) - 125$

Step 1.3

Rewrite ${(x^{2} - 25)}^{2}$ as $(x^{2} - 25) (x^{2} - 25)$ .

$x^{6} - 75 x^{4} + 1875 x^{2} - 15625 - 15 ((x^{2} - 25) (x^{2} - 25)) + 75 (x^{2} - 25) - 125$

Step 1.4

Expand $(x^{2} - 25) (x^{2} - 25)$ using the FOIL Method.

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Step 1.4.1

Apply the distributive property.

$x^{6} - 75 x^{4} + 1875 x^{2} - 15625 - 15 (x^{2} (x^{2} - 25) - 25 (x^{2} - 25)) + 75 (x^{2} - 25) - 125$

Step 1.4.2

Apply the distributive property.

$x^{6} - 75 x^{4} + 1875 x^{2} - 15625 - 15 (x^{2} x^{2} + x^{2} \cdot - 25 - 25 (x^{2} - 25)) + 75 (x^{2} - 25) - 125$

Step 1.4.3

Apply the distributive property.

$x^{6} - 75 x^{4} + 1875 x^{2} - 15625 - 15 (x^{2} x^{2} + x^{2} \cdot - 25 - 25 x^{2} - 25 \cdot - 25) + 75 (x^{2} - 25) - 125$

Step 1.5

Simplify and combine like terms.

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Step 1.5.1

Simplify each term.

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Step 1.5.1.1

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

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Step 1.5.1.1.1

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

$x^{6} - 75 x^{4} + 1875 x^{2} - 15625 - 15 (x^{2 + 2} + x^{2} \cdot - 25 - 25 x^{2} - 25 \cdot - 25) + 75 (x^{2} - 25) - 125$

Step 1.5.1.1.2

Add $2$ and $2$ .

$x^{6} - 75 x^{4} + 1875 x^{2} - 15625 - 15 (x^{4} + x^{2} \cdot - 25 - 25 x^{2} - 25 \cdot - 25) + 75 (x^{2} - 25) - 125$

Step 1.5.1.2

Move $- 25$ to the left of $x^{2}$ .

$x^{6} - 75 x^{4} + 1875 x^{2} - 15625 - 15 (x^{4} - 25 \cdot x^{2} - 25 x^{2} - 25 \cdot - 25) + 75 (x^{2} - 25) - 125$

Step 1.5.1.3

Multiply $- 25$ by $- 25$ .

$x^{6} - 75 x^{4} + 1875 x^{2} - 15625 - 15 (x^{4} - 25 x^{2} - 25 x^{2} + 625) + 75 (x^{2} - 25) - 125$

Step 1.5.2

Subtract $25 x^{2}$ from $- 25 x^{2}$ .

$x^{6} - 75 x^{4} + 1875 x^{2} - 15625 - 15 (x^{4} - 50 x^{2} + 625) + 75 (x^{2} - 25) - 125$

Step 1.6

Apply the distributive property.

$x^{6} - 75 x^{4} + 1875 x^{2} - 15625 - 15 x^{4} - 15 (- 50 x^{2}) - 15 \cdot 625 + 75 (x^{2} - 25) - 125$

Step 1.7

Simplify.

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Step 1.7.1

Multiply $- 50$ by $- 15$ .

$x^{6} - 75 x^{4} + 1875 x^{2} - 15625 - 15 x^{4} + 750 x^{2} - 15 \cdot 625 + 75 (x^{2} - 25) - 125$

Step 1.7.2

Multiply $- 15$ by $625$ .

$x^{6} - 75 x^{4} + 1875 x^{2} - 15625 - 15 x^{4} + 750 x^{2} - 9375 + 75 (x^{2} - 25) - 125$

Step 1.8

Apply the distributive property.

$x^{6} - 75 x^{4} + 1875 x^{2} - 15625 - 15 x^{4} + 750 x^{2} - 9375 + 75 x^{2} + 75 \cdot - 25 - 125$

Step 1.9

Multiply $75$ by $- 25$ .

$x^{6} - 75 x^{4} + 1875 x^{2} - 15625 - 15 x^{4} + 750 x^{2} - 9375 + 75 x^{2} - 1875 - 125$

Step 2

Simplify by adding terms.

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Step 2.1

Subtract $15 x^{4}$ from $- 75 x^{4}$ .

$x^{6} - 90 x^{4} + 1875 x^{2} - 15625 + 750 x^{2} - 9375 + 75 x^{2} - 1875 - 125$

Step 2.2

Add $1875 x^{2}$ and $750 x^{2}$ .

$x^{6} - 90 x^{4} + 2625 x^{2} - 15625 - 9375 + 75 x^{2} - 1875 - 125$

Step 2.3

Add $2625 x^{2}$ and $75 x^{2}$ .

$x^{6} - 90 x^{4} + 2700 x^{2} - 15625 - 9375 - 1875 - 125$

Step 2.4

Simplify by subtracting numbers.

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Step 2.4.1

Subtract $9375$ from $- 15625$ .

$x^{6} - 90 x^{4} + 2700 x^{2} - 25000 - 1875 - 125$

Step 2.4.2

Subtract $1875$ from $- 25000$ .

$x^{6} - 90 x^{4} + 2700 x^{2} - 26875 - 125$

Step 2.4.3

Subtract $125$ from $- 26875$ .

$x^{6} - 90 x^{4} + 2700 x^{2} - 27000$