Robert J. answered • 11/13/13

Tutor

4.6
(13)
Certified High School AP Calculus and Physics Teacher

4^(2x) = 8^(3x-4) <==Is this what you want to solve?

Change to the common base 2,

2^(4x) = 2^(9x-12), since 4 = 2^2, and 8 = 2^3

So, 4x = 9x-12

x = 12/5 <==Answer