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3^x^2=81*27^x
We move all terms to the left:
3^x^2-(81*27^x)=0
We get rid of parentheses
3^x^2-81*27^x=0
Wy multiply elements
3^x^2-2187x=0
We add all the numbers together, and all the variables
-2187x+3^x^2=0
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