# How do you simplify #(5b^-3)^4# and write it using only positive exponents?

##### 2 Answers

Aug 30, 2016

#### Explanation:

Aug 30, 2016

#### Explanation:

There are 3 laws of indices being applied here,

A power outside applies to all the factors inside:

Raising to a power, multiply the indices:

Negative index becomes positive in the denominator and v.v.

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This can also be written as