Solve for x, 9^x-1 = 3^1+x
How do I get the X out of the Exponent?
3 answers
9 = 3^2 ... (3^2)^(x - 1) = 3^(2x - 2)
So.. you just mulitplied by 2?? I thought we were supposed to get x out of the exponent first before we solve? Im confused
use rules of exponents to get bases the same (3)
if bases are equal, then the exponents are equal
if bases are equal, then the exponents are equal
21 answers