Trigonometry Examples

$- 7 x^{- 15} - 7 y^{- 15}$

Step 1

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$- 7 \frac{1}{x^{15}} - 7 y^{- 15}$

Step 2

Combine $- 7$ and $\frac{1}{x^{15}}$ .

$\frac{- 7}{x^{15}} - 7 y^{- 15}$

Step 3

Move the negative in front of the fraction.

$- \frac{7}{x^{15}} - 7 y^{- 15}$

Step 4

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$- \frac{7}{x^{15}} - 7 \frac{1}{y^{15}}$

Step 5

Combine $- 7$ and $\frac{1}{y^{15}}$ .

$- \frac{7}{x^{15}} + \frac{- 7}{y^{15}}$

Step 6

Move the negative in front of the fraction.

$- \frac{7}{x^{15}} - \frac{7}{y^{15}}$