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4^x=1/4^2
We move all terms to the left:
4^x-(1/4^2)=0
We get rid of parentheses
4^x-1/4^2=0
We multiply all the terms by the denominator
4^x*4^2-1=0
Wy multiply elements
16x^3-1=0
We do not support expression: x^3
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