f(x)=5x^2-21x-20

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Solution for f(x)=5x^2-21x-20 equation: 


Simplifying
f(x) = 5x2 + -21x + -20

Multiply f * x
fx = 5x2 + -21x + -20

Reorder the terms:
fx = -20 + -21x + 5x2

Solving
fx = -20 + -21x + 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 + -21 + 5x

Simplifying
f = -20x-1 + -21 + 5x

Reorder the terms:
f = -21 + -20x-1 + 5x

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