f(x)=-x^2(x^2-4)

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Solution for f(x)=-x^2(x^2-4) equation: 


Simplifying
f(x) = -1x2(x2 + -4)

Multiply f * x
fx = -1x2(x2 + -4)

Reorder the terms:
fx = -1x2(-4 + x2)
fx = (-4 * -1x2 + x2 * -1x2)
fx = (4x2 + -1x4)

Solving
fx = 4x2 + -1x4

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 + -1x3

Simplifying
f = 4x + -1x3

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