SOLUTION: 9^x*3^(x2)=81^2

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Question 528654: 9^x*3^(x2)=81^2
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Solve for x
9^x*3^(x2)=81^2
(3^2)^x*3^x^2=(3^4)^2
3^2x*3^x^2=3^8
3^(2x+x^2)=3^8
2x+x^2=8
x^2+2x-8=0
(x+4)(x-2)=0
x=-4
or
x=2