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

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


Simplifying
f(x) = 3x2 + 12x

Multiply f * x
fx = 3x2 + 12x

Reorder the terms:
fx = 12x + 3x2

Solving
fx = 12x + 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 = 12 + 3x

Simplifying
f = 12 + 3x

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