3^x+2=3^x+216 then find x
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Answer:
3^(x+2)=3^x+216
We move all terms to the left:
3^(x+2)-(3^x+216)=0
We get rid of parentheses
3^(x+2)-3^x-216=0
We move all terms containing x to the left, all other terms to the right
3^(x+2)-3^x=216
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