Question

How do I solve this in the easiest and simplest way possible? Please explain step by step as I am new to this

Answer 1

$2^{-2}$

Use the next property for negative exponents:

$a^{-n}=\frac{1}{a^n}$$2^{-2}=\frac{1}{2^2}=\frac{1}{2\times2}=\frac{1}{4}$

Then, the given expressin is equal to 1/4