f(x)=3x^2+9x-12

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Solution for f(x)=3x^2+9x-12 equation: 


Simplifying
f(x) = 3x2 + 9x + -12

Multiply f * x
fx = 3x2 + 9x + -12

Reorder the terms:
fx = -12 + 9x + 3x2

Solving
fx = -12 + 9x + 3x2

Solving for variable 'f'.

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

Divide each side by 'x'.
f = -12x-1 + 9 + 3x

Simplifying
f = -12x-1 + 9 + 3x

Reorder the terms:
f = 9 + -12x-1 + 3x

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