(-y+9)^2+2y^2=81

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Solution for (-y+9)^2+2y^2=81 equation: 



(-y+9)^2+2y^2=81

We move all terms to the left:

(-y+9)^2+2y^2-(81)=0

We add all the numbers together, and all the variables

2y^2+(-1y+9)^2-81=0

We move all terms containing y to the left, all other terms to the right

2y^2+(-1y+9)^2=81

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