Question

How do you simplify `-(2x)/a^-4` and write it using only positive exponents?

Answer 1

We can use a rule of exponents to simplify this expression. See full explanation below

Explanation:

We can use the following rule for exponents to simplify this expression to use only positive exponents:

`z^b = 1/z^b` and therefore `1/z^-b = z^b`

Applying this to the expression in the problem gives:

`-2xa^4` or `-2a^4x`