f(x)=5x^4-4x^3-20x+16x

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Solution for f(x)=5x^4-4x^3-20x+16x equation: 


Simplifying
f(x) = 5x4 + -4x3 + -20x + 16x

Multiply f * x
fx = 5x4 + -4x3 + -20x + 16x

Reorder the terms:
fx = -20x + 16x + -4x3 + 5x4

Combine like terms: -20x + 16x = -4x
fx = -4x + -4x3 + 5x4

Solving
fx = -4x + -4x3 + 5x4

Solving for variable 'f'.

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

Divide each side by 'x'.
f = -4 + -4x2 + 5x3

Simplifying
f = -4 + -4x2 + 5x3

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