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3^(2x+1)-8*3^x=3
We move all terms to the left:
3^(2x+1)-8*3^x-(3)=0
Wy multiply elements
3^(2x+1)-24x-3=0
We add all the numbers together, and all the variables
-24x+3^(2x+1)-3=0
We move all terms containing x to the left, all other terms to the right
-24x+3^(2x+1)=3
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