Simplify (1/2-x^2)^3

${(\frac{1}{2} - x^{2})}^{3}$

Step 1

Use the Binomial Theorem.

${(\frac{1}{2})}^{3} + 3 {(\frac{1}{2})}^{2} (- x^{2}) + 3 (\frac{1}{2}) {(- x^{2})}^{2} + {(- x^{2})}^{3}$

Step 2

Simplify each term.

Apply the product rule to $\frac{1}{2}$ .

$\frac{1^{3}}{2^{3}} + 3 {(\frac{1}{2})}^{2} (- x^{2}) + 3 (\frac{1}{2}) {(- x^{2})}^{2} + {(- x^{2})}^{3}$

One to any power is one.

$\frac{1}{2^{3}} + 3 {(\frac{1}{2})}^{2} (- x^{2}) + 3 (\frac{1}{2}) {(- x^{2})}^{2} + {(- x^{2})}^{3}$

Raise $2$ to the power of $3$ .

$\frac{1}{8} + 3 {(\frac{1}{2})}^{2} (- x^{2}) + 3 (\frac{1}{2}) {(- x^{2})}^{2} + {(- x^{2})}^{3}$

Apply the product rule to $\frac{1}{2}$ .

$\frac{1}{8} + 3 \frac{1^{2}}{2^{2}} (- x^{2}) + 3 (\frac{1}{2}) {(- x^{2})}^{2} + {(- x^{2})}^{3}$

One to any power is one.

$\frac{1}{8} + 3 \frac{1}{2^{2}} (- x^{2}) + 3 (\frac{1}{2}) {(- x^{2})}^{2} + {(- x^{2})}^{3}$

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

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

Combine $3$ and $\frac{1}{4}$ .

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

Combine $\frac{3}{4}$ and $x^{2}$ .

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

Combine $3$ and $\frac{1}{2}$ .

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

Apply the product rule to $- x^{2}$ .

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

Raise $- 1$ to the power of $2$ .

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

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

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

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

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

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

Multiply $2$ by $2$ .

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

Combine $\frac{3}{2}$ and $x^{4}$ .

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

Apply the product rule to $- x^{2}$ .

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

Raise $- 1$ to the power of $3$ .

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

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

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

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

Multiply $2$ by $3$ .

$\frac{1}{8} - \frac{3 x^{2}}{4} + \frac{3 x^{4}}{2} - x^{6}$

Simplify (1/2-x^2)^3

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