x4=81x2

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Solution for x4=81x2 equation: 



x4=81x^2

We move all terms to the left:

x4-(81x^2)=0

determiningTheFunctionDomain
-81x^2+x4=0

We add all the numbers together, and all the variables

-81x^2+x^4=0

We do not support expression: x^4

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