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

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


Simplifying
f(x) = -1(-1x3)

Multiply f * x
fx = -1(-1x3)

Remove parenthesis around (-1x3)
fx = -1 * -1x3

Multiply -1 * -1
fx = 1x3

Solving
fx = 1x3

Solving for variable 'f'.

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

Divide each side by 'x'.
f = x2

Simplifying
f = x2

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