Trigonometry Examples

$\frac{{(625)}^{x + \frac{1}{4}} \cdot {(27)}^{x + 1}}{{(125)}^{x - 1} \cdot {(15)}^{x + 5} \cdot {(\sqrt{81})}^{x - 1}}$

Step 1

Simplify the numerator.

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Step 1.1

To write $x$ as a fraction with a common denominator, multiply by $\frac{4}{4}$ .

$\frac{625^{x \cdot \frac{4}{4} + \frac{1}{4}} \cdot 27^{x + 1}}{125^{x - 1} \cdot 15^{x + 5} \cdot {\sqrt{81}}^{x - 1}}$

Step 1.2

Combine $x$ and $\frac{4}{4}$ .

$\frac{625^{\frac{x \cdot 4}{4} + \frac{1}{4}} \cdot 27^{x + 1}}{125^{x - 1} \cdot 15^{x + 5} \cdot {\sqrt{81}}^{x - 1}}$

Step 1.3

Combine the numerators over the common denominator.

$\frac{625^{\frac{x \cdot 4 + 1}{4}} \cdot 27^{x + 1}}{125^{x - 1} \cdot 15^{x + 5} \cdot {\sqrt{81}}^{x - 1}}$

Step 1.4

Move $4$ to the left of $x$ .

$\frac{625^{\frac{4 x + 1}{4}} \cdot 27^{x + 1}}{125^{x - 1} \cdot 15^{x + 5} \cdot {\sqrt{81}}^{x - 1}}$

Step 2

Rewrite ${\sqrt{81}}^{x - 1} \cdot 125^{x - 1}$ as ${(\sqrt{81} \cdot 125)}^{x - 1}$ .

$\frac{625^{\frac{4 x + 1}{4}} \cdot 27^{x + 1}}{{(\sqrt{81} \cdot 125)}^{x - 1} \cdot 15^{x + 5}}$

Step 3

Simplify the denominator.

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Step 3.1

Rewrite $81$ as $9^{2}$ .

$\frac{625^{\frac{4 x + 1}{4}} \cdot 27^{x + 1}}{{(\sqrt{9^{2}} \cdot 125)}^{x - 1} \cdot 15^{x + 5}}$

Step 3.2

Pull terms out from under the radical, assuming positive real numbers.

$\frac{625^{\frac{4 x + 1}{4}} \cdot 27^{x + 1}}{{(9 \cdot 125)}^{x - 1} \cdot 15^{x + 5}}$

Step 3.3

Multiply $9$ by $125$ .

$\frac{625^{\frac{4 x + 1}{4}} \cdot 27^{x + 1}}{1125^{x - 1} \cdot 15^{x + 5}}$