Precalculus Examples

$u^{\frac{3}{2}} u^{\frac{1}{3}}$

Step 1

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

$u^{\frac{3}{2} + \frac{1}{3}}$

Step 2

To write $\frac{3}{2}$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$u^{\frac{3}{2} \cdot \frac{3}{3} + \frac{1}{3}}$

Step 3

To write $\frac{1}{3}$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$u^{\frac{3}{2} \cdot \frac{3}{3} + \frac{1}{3} \cdot \frac{2}{2}}$

Step 4

Write each expression with a common denominator of $6$ , by multiplying each by an appropriate factor of $1$ .

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Step 4.1

Multiply $\frac{3}{2}$ by $\frac{3}{3}$ .

$u^{\frac{3 \cdot 3}{2 \cdot 3} + \frac{1}{3} \cdot \frac{2}{2}}$

Step 4.2

Multiply $2$ by $3$ .

$u^{\frac{3 \cdot 3}{6} + \frac{1}{3} \cdot \frac{2}{2}}$

Step 4.3

Multiply $\frac{1}{3}$ by $\frac{2}{2}$ .

$u^{\frac{3 \cdot 3}{6} + \frac{2}{3 \cdot 2}}$

Step 4.4

Multiply $3$ by $2$ .

$u^{\frac{3 \cdot 3}{6} + \frac{2}{6}}$

Step 5

Combine the numerators over the common denominator.

$u^{\frac{3 \cdot 3 + 2}{6}}$

Step 6

Simplify the numerator.

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Step 6.1

Multiply $3$ by $3$ .

$u^{\frac{9 + 2}{6}}$

Step 6.2

Add $9$ and $2$ .

$u^{\frac{11}{6}}$