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x.x^2=25/289
We move all terms to the left:
x.x^2-(25/289)=0
We add all the numbers together, and all the variables
x.x^2-(+25/289)=0
We get rid of parentheses
x.x^2-25/289=0
We multiply all the terms by the denominator
(x.x^2)*289-25=0
We multiply parentheses
289x-25=0
We move all terms containing x to the left, all other terms to the right
289x=25
x=25/289
x=25/289
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