- #1
chillfactor
- 12
- 0
Homework Statement
The problem is 3^2x+3^(x+1)-4=0
I know I had to solve it by substitution
Homework Equations
The Attempt at a Solution
I had u = 3^x
I put it in:
(u )(u ), but I was not sure how to get the middle term 3^(x+1)