fx=-x^3-3x^2-1

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Solution for fx=-x^3-3x^2-1 equation: 


Simplifying
fx = -1x3 + -3x2 + -1

Reorder the terms:
fx = -1 + -3x2 + -1x3

Solving
fx = -1 + -3x2 + -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 = -1x-1 + -3x + -1x2

Simplifying
f = -1x-1 + -3x + -1x2

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