f(x)=x(3x-9)2

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Solution for f(x)=x(3x-9)2 equation: 


Simplifying
f(x) = x(3x + -9) * 2

Multiply f * x
fx = x(3x + -9) * 2

Reorder the terms:
fx = x(-9 + 3x) * 2

Reorder the terms for easier multiplication:
fx = 2x(-9 + 3x)
fx = (-9 * 2x + 3x * 2x)
fx = (-18x + 6x2)

Solving
fx = -18x + 6x2

Solving for variable 'f'.

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

Divide each side by 'x'.
f = -18 + 6x

Simplifying
f = -18 + 6x

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