f(x)=9x^3-25x

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Solution for f(x)=9x^3-25x equation: 


Simplifying
f(x) = 9x3 + -25x

Multiply f * x
fx = 9x3 + -25x

Reorder the terms:
fx = -25x + 9x3

Solving
fx = -25x + 9x3

Solving for variable 'f'.

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

Divide each side by 'x'.
f = -25 + 9x2

Simplifying
f = -25 + 9x2

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