How do you solve 3 ^(-4x+4) = 9?

1 Answer
May 23, 2016

x=1/2

Explanation:

3^(-4x+4)=9

3^(-4x) *3^4=3^2

3^(-4x)=(3^2)/(3^4)

3^(-4x)=3^2*3^-4

color(red)(3)^(-4x)=color(red)(3)^-2

"Both side of equation has the same base value"

-4x=-2

x=2/4

x=1/2