F(x)=-(x-40)(x+2)

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Solution for F(x)=-(x-40)(x+2) equation: 


Simplifying
F(x) = -1(x + -40)(x + 2)

Multiply F * x
xF = -1(x + -40)(x + 2)

Reorder the terms:
xF = -1(-40 + x)(x + 2)

Reorder the terms:
xF = -1(-40 + x)(2 + x)

Multiply (-40 + x) * (2 + x)
xF = -1(-40(2 + x) + x(2 + x))
xF = -1((2 * -40 + x * -40) + x(2 + x))
xF = -1((-80 + -40x) + x(2 + x))
xF = -1(-80 + -40x + (2 * x + x * x))
xF = -1(-80 + -40x + (2x + x2))

Combine like terms: -40x + 2x = -38x
xF = -1(-80 + -38x + x2)
xF = (-80 * -1 + -38x * -1 + x2 * -1)
xF = (80 + 38x + -1x2)

Solving
xF = 80 + 38x + -1x2

Solving for variable 'x'.

Reorder the terms:
-80 + -38x + xF + x2 = 80 + 38x + -1x2 + -80 + -38x + x2

Reorder the terms:
-80 + -38x + xF + x2 = 80 + -80 + 38x + -38x + -1x2 + x2

Combine like terms: 80 + -80 = 0
-80 + -38x + xF + x2 = 0 + 38x + -38x + -1x2 + x2
-80 + -38x + xF + x2 = 38x + -38x + -1x2 + x2

Combine like terms: 38x + -38x = 0
-80 + -38x + xF + x2 = 0 + -1x2 + x2
-80 + -38x + xF + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
-80 + -38x + xF + x2 = 0

The solution to this equation could not be determined.

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