f(x)=5x^2+15x-20

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Solution for f(x)=5x^2+15x-20 equation: 


Simplifying
f(x) = 5x2 + 15x + -20

Multiply f * x
fx = 5x2 + 15x + -20

Reorder the terms:
fx = -20 + 15x + 5x2

Solving
fx = -20 + 15x + 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 = -20x-1 + 15 + 5x

Simplifying
f = -20x-1 + 15 + 5x

Reorder the terms:
f = 15 + -20x-1 + 5x

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