Question

A and b are positive integers and a−b = 2. Evaluate the following:
2^a / 2^b

Answer 1

2³/2=4

Explanation:

a=2+b

(2+b)²/b²

4+4b+b²/b²

since b²/b² cancel out

4+4b=0

4b=4

b=1

sub into a=b+2

a=3

I'm not exactly sure what I did was correct but I hope it helps anyways.