f(x)=4-7x^3

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Solution for f(x)=4-7x^3 equation: 


Simplifying
f(x) = 4 + -7x3

Multiply f * x
fx = 4 + -7x3

Solving
fx = 4 + -7x3

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 + -7x2

Simplifying
f = 4x-1 + -7x2

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