f(x)=3(x^4)-9(x^3)-12(x^2)

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Solution for f(x)=3(x^4)-9(x^3)-12(x^2) equation: 


Simplifying
f(x) = 3(x4) + -9(x3) + -12(x2)

Multiply f * x
fx = 3(x4) + -9(x3) + -12(x2)

Reorder the terms:
fx = -12x2 + -9x3 + 3x4

Solving
fx = -12x2 + -9x3 + 3x4

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 + -9x2 + 3x3

Simplifying
f = -12x + -9x2 + 3x3

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