f(20)=2x^3-4x+1

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Solution for f(20)=2x^3-4x+1 equation: 


Simplifying
f(20) = 2x3 + -4x + 1

Reorder the terms for easier multiplication:
20f = 2x3 + -4x + 1

Reorder the terms:
20f = 1 + -4x + 2x3

Solving
20f = 1 + -4x + 2x3

Solving for variable 'f'.

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

Divide each side by '20'.
f = 0.05 + -0.2x + 0.1x3

Simplifying
f = 0.05 + -0.2x + 0.1x3

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