f(x)=(x)(-2x)-10

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Solution for f(x)=(x)(-2x)-10 equation: 


Simplifying
f(x) = (x)(-2x) + -10

Multiply f * x
fx = (x)(-2x) + -10

Remove parenthesis around (-2x)
fx = x * -2x + -10

Reorder the terms for easier multiplication:
fx = -2x * x + -10

Multiply x * x
fx = -2x2 + -10

Reorder the terms:
fx = -10 + -2x2

Solving
fx = -10 + -2x2

Solving for variable 'f'.

Move all terms containing f to the left, all other terms to the right.

Divide each side by 'x'.
f = -10x-1 + -2x

Simplifying
f = -10x-1 + -2x

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