Simplify (2(a^-1)^3)/(-10a^5)

$\frac{2 {(a^{- 1})}^{3}}{- 10 a^{5}}$

Cancel the common factor of $2$ and $- 10$ .

Factor $2$ out of $2 {(a^{- 1})}^{3}$ .

$\frac{2 ({(a^{- 1})}^{3})}{- 10 a^{5}}$

Cancel the common factors.

Factor $2$ out of $- 10 a^{5}$ .

$\frac{2 ({(a^{- 1})}^{3})}{2 (- 5 a^{5})}$

Cancel the common factor.

$\frac{2 {(a^{- 1})}^{3}}{2 (- 5 a^{5})}$

Rewrite the expression.

$\frac{{(a^{- 1})}^{3}}{- 5 a^{5}}$

Simplify the numerator.

Multiply the exponents in ${(a^{- 1})}^{3}$ .

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

$\frac{a^{- 1 \cdot 3}}{- 5 a^{5}}$

Multiply $- 1$ by $3$ .

$\frac{a^{- 3}}{- 5 a^{5}}$

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

$\frac{\frac{1}{a^{3}}}{- 5 a^{5}}$

Multiply the numerator by the reciprocal of the denominator.

$\frac{1}{a^{3}} \cdot \frac{1}{- 5 a^{5}}$

Combine.

$\frac{1 \cdot 1}{a^{3} (- 5 a^{5})}$

Multiply $a^{3}$ by $a^{5}$ by adding the exponents.

Move $a^{5}$ .

$\frac{1 \cdot 1}{a^{5} a^{3} \cdot - 5}$

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

$\frac{1 \cdot 1}{a^{5 + 3} \cdot - 5}$

Add $5$ and $3$ .

$\frac{1 \cdot 1}{a^{8} \cdot - 5}$

Multiply $1$ by $1$ .

$\frac{1}{a^{8} \cdot - 5}$

Move $- 5$ to the left of $a^{8}$ .

$\frac{1}{- 5 \cdot a^{8}}$

Move the negative in front of the fraction.

$- \frac{1}{5 a^{8}}$