9^(x)+3^(x)=90

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Solution for 9^(x)+3^(x)=90 equation: 



9^(x)+3^(x)=90

We move all terms to the left:

9^(x)+3^(x)-(90)=0

We move all terms containing x to the left, all other terms to the right

9^x+3^x=90

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