4x - 4x-1 = 24
(22)x - (22)x-1 = 24 rewrite 4 as 22
22x - 22x-2 = 24 simplify
22x - 22x/22 = 24 rewrtie 2-2 as 1/22
4[ 22x - 22x/22 ] = 4[ 24 ] multiply both sides by 4
4·22x - 22x = 96 simplify
4·22x - 1·22x = 96 rewrite
(4 - 1)·22x = 96 factor
3·22x = 96 simplify
22x = 32 divide both sides by 3
22x = 25 rewrite
2x = 5 rewrite
x = 2.5 divide
(2x)x = (2 · 2.5)2,5 = 52.5 = 52 · 50.5 = 25·sqrt(5)