3^(x+2)+3^x=72

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Solution for 3^(x+2)+3^x=72 equation: 



3^(x+2)+3^x=72

We move all terms to the left:

3^(x+2)+3^x-(72)=0

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

3^(x+2)+3^x=72

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