Algebra Examples

${(\frac{8}{9})}^{- \frac{3}{2}}$

Step 1

Change the sign of the exponent by rewriting the base as its reciprocal.

${(\frac{9}{8})}^{\frac{3}{2}}$

Step 2

Apply the product rule to $\frac{9}{8}$ .

$\frac{9^{\frac{3}{2}}}{8^{\frac{3}{2}}}$

Step 3

Simplify the numerator.

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Step 3.1

Rewrite $9$ as $3^{2}$ .

$\frac{{(3^{2})}^{\frac{3}{2}}}{8^{\frac{3}{2}}}$

Step 3.2

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

$\frac{3^{2 (\frac{3}{2})}}{8^{\frac{3}{2}}}$

Step 3.3

Cancel the common factor of $2$ .

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Step 3.3.1

Cancel the common factor.

$\frac{3^{2 (\frac{3}{2})}}{8^{\frac{3}{2}}}$

Step 3.3.2

Rewrite the expression.

$\frac{3^{3}}{8^{\frac{3}{2}}}$

Step 3.4

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

$\frac{27}{8^{\frac{3}{2}}}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$\frac{27}{8^{\frac{3}{2}}}$

Decimal Form:

$1.19324269 \dots$