f(x)=x^4-8x^2y+9y^2

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Solution for f(x)=x^4-8x^2y+9y^2 equation: 


Simplifying
f(x) = x4 + -8x2y + 9y2

Multiply f * x
fx = x4 + -8x2y + 9y2

Reorder the terms:
fx = -8x2y + x4 + 9y2

Solving
fx = -8x2y + x4 + 9y2

Solving for variable 'f'.

Move all terms containing f to the left, all other terms to the right.

Divide each side by 'x'.
f = -8xy + x3 + 9x-1y2

Simplifying
f = -8xy + x3 + 9x-1y2

Reorder the terms:
f = 9x-1y2 + -8xy + x3

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