f(x)=x^4-2x^3-7x^2+20x-12

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Solution for f(x)=x^4-2x^3-7x^2+20x-12 equation: 


Simplifying
f(x) = x4 + -2x3 + -7x2 + 20x + -12

Multiply f * x
fx = x4 + -2x3 + -7x2 + 20x + -12

Reorder the terms:
fx = -12 + 20x + -7x2 + -2x3 + x4

Solving
fx = -12 + 20x + -7x2 + -2x3 + x4

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 + 20 + -7x + -2x2 + x3

Simplifying
f = -12x-1 + 20 + -7x + -2x2 + x3

Reorder the terms:
f = 20 + -12x-1 + -7x + -2x2 + x3

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