Question

Simplify (a^2b^-3)^4

Answer 1

Do you mean b^-3?

Answer 2

the power of r opertaes on both terms so it can be written as

\[(a^2)^4 \times (b^{-3})^4\]

and now you need the power of a power law

\[(x^a)^b = x^{a \times b}\]

which requires you to multiply the powers.

hope it helps

Answer 3

using the information from @campbell_st you should have this