# How do you get rid of the negative exponents in (-4a ^ { 3} b ^ { - 5} ) ^ { - 2}?

Oct 24, 2017

#### Explanation:

There are two rules we may use here:

1) Negative exponent rule

${a}^{- b} = \left(\frac{1}{{a}^{b}}\right)$

2) Multiplying powers

${\left({a}^{m}\right)}^{n} = {a}^{m n}$