f(x)=4-8x-5x^2

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Solution for f(x)=4-8x-5x^2 equation: 


Simplifying
f(x) = 4 + -8x + -5x2

Multiply f * x
fx = 4 + -8x + -5x2

Solving
fx = 4 + -8x + -5x2

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 + -8 + -5x

Simplifying
f = 4x-1 + -8 + -5x

Reorder the terms:
f = -8 + 4x-1 + -5x

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