SOLUTION: 2^2x-3(2^x)+2=0 , find the trueth set of the equation Thank you

Algebra ->  Equations -> SOLUTION: 2^2x-3(2^x)+2=0 , find the trueth set of the equation Thank you      Log On


   

Question 995992: 2^2x-3(2^x)+2=0 , find the trueth set of the equation
Thank you
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
2^2x-3(2^x)+2=0
-------
Sub u for 2^x
u%5E2+-+3u+%2B+2+=+0
(u - 2)*(u - 1) = 0
u = 1,2
---
2^x = 1 --> x = 0
==========
2^x = 2 --> x = 1