f(x)=2x^4-15x^3+30x^2-90x+108

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Solution for f(x)=2x^4-15x^3+30x^2-90x+108 equation: 


Simplifying
f(x) = 2x4 + -15x3 + 30x2 + -90x + 108

Multiply f * x
fx = 2x4 + -15x3 + 30x2 + -90x + 108

Reorder the terms:
fx = 108 + -90x + 30x2 + -15x3 + 2x4

Solving
fx = 108 + -90x + 30x2 + -15x3 + 2x4

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 108x-1 + -90 + 30x + -15x2 + 2x3

Simplifying
f = 108x-1 + -90 + 30x + -15x2 + 2x3

Reorder the terms:
f = -90 + 108x-1 + 30x + -15x2 + 2x3

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