fx=0.5((x*x)-6x-7)

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Solution for fx=0.5((x*x)-6x-7) equation: 


Simplifying
fx = 0.5((x * x) + -6x + -7)

Multiply x * x
fx = 0.5((x2) + -6x + -7)
fx = 0.5(x2 + -6x + -7)

Reorder the terms:
fx = 0.5(-7 + -6x + x2)
fx = (-7 * 0.5 + -6x * 0.5 + x2 * 0.5)
fx = (-3.5 + -3x + 0.5x2)

Solving
fx = -3.5 + -3x + 0.5x2

Solving for variable 'f'.

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

Divide each side by 'x'.
f = -3.5x-1 + -3 + 0.5x

Simplifying
f = -3.5x-1 + -3 + 0.5x

Reorder the terms:
f = -3 + -3.5x-1 + 0.5x

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