FX=2X^2-X^2+81X-81

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Solution for FX=2X^2-X^2+81X-81 equation: 


Simplifying
FX = 2X2 + -1X2 + 81X + -81

Reorder the terms:
FX = -81 + 81X + 2X2 + -1X2

Combine like terms: 2X2 + -1X2 = 1X2
FX = -81 + 81X + 1X2

Solving
FX = -81 + 81X + 1X2

Solving for variable 'F'.

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

Divide each side by 'X'.
F = -81X-1 + 81 + X

Simplifying
F = -81X-1 + 81 + X

Reorder the terms:
F = 81 + -81X-1 + X

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