F(x)=-1(x+1)(x-7)

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Solution for F(x)=-1(x+1)(x-7) equation: 


Simplifying
F(x) = -1(x + 1)(x + -7)

Multiply F * x
xF = -1(x + 1)(x + -7)

Reorder the terms:
xF = -1(1 + x)(x + -7)

Reorder the terms:
xF = -1(1 + x)(-7 + x)

Multiply (1 + x) * (-7 + x)
xF = -1(1(-7 + x) + x(-7 + x))
xF = -1((-7 * 1 + x * 1) + x(-7 + x))
xF = -1((-7 + 1x) + x(-7 + x))
xF = -1(-7 + 1x + (-7 * x + x * x))
xF = -1(-7 + 1x + (-7x + x2))

Combine like terms: 1x + -7x = -6x
xF = -1(-7 + -6x + x2)
xF = (-7 * -1 + -6x * -1 + x2 * -1)
xF = (7 + 6x + -1x2)

Solving
xF = 7 + 6x + -1x2

Solving for variable 'x'.

Reorder the terms:
-7 + -6x + xF + x2 = 7 + 6x + -1x2 + -7 + -6x + x2

Reorder the terms:
-7 + -6x + xF + x2 = 7 + -7 + 6x + -6x + -1x2 + x2

Combine like terms: 7 + -7 = 0
-7 + -6x + xF + x2 = 0 + 6x + -6x + -1x2 + x2
-7 + -6x + xF + x2 = 6x + -6x + -1x2 + x2

Combine like terms: 6x + -6x = 0
-7 + -6x + xF + x2 = 0 + -1x2 + x2
-7 + -6x + xF + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
-7 + -6x + xF + x2 = 0

The solution to this equation could not be determined.

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