Question

How do you simplify and write `a^2b^-4` with positive exponents?

Answer 1

We can use this rule of exponents to eliminate the negative exponent:

`x^color(red)(a) = 1/x^color(red)(-a)`

`a^2b^color(red)(-4) => a^2/b^color(red)(- -4) => a^2/b^4`