f(x)=9x^4+27x^3-13x^2-12x+4

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Solution for f(x)=9x^4+27x^3-13x^2-12x+4 equation: 


Simplifying
f(x) = 9x4 + 27x3 + -13x2 + -12x + 4

Multiply f * x
fx = 9x4 + 27x3 + -13x2 + -12x + 4

Reorder the terms:
fx = 4 + -12x + -13x2 + 27x3 + 9x4

Solving
fx = 4 + -12x + -13x2 + 27x3 + 9x4

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 4x-1 + -12 + -13x + 27x2 + 9x3

Simplifying
f = 4x-1 + -12 + -13x + 27x2 + 9x3

Reorder the terms:
f = -12 + 4x-1 + -13x + 27x2 + 9x3

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