F(x)=(x+7)(x-4)

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Solution for F(x)=(x+7)(x-4) equation: 


Simplifying
F(x) = (x + 7)(x + -4)

Multiply F * x
xF = (x + 7)(x + -4)

Reorder the terms:
xF = (7 + x)(x + -4)

Reorder the terms:
xF = (7 + x)(-4 + x)

Multiply (7 + x) * (-4 + x)
xF = (7(-4 + x) + x(-4 + x))
xF = ((-4 * 7 + x * 7) + x(-4 + x))
xF = ((-28 + 7x) + x(-4 + x))
xF = (-28 + 7x + (-4 * x + x * x))
xF = (-28 + 7x + (-4x + x2))

Combine like terms: 7x + -4x = 3x
xF = (-28 + 3x + x2)

Solving
xF = -28 + 3x + x2

Solving for variable 'x'.

Reorder the terms:
28 + -3x + xF + -1x2 = -28 + 3x + x2 + 28 + -3x + -1x2

Reorder the terms:
28 + -3x + xF + -1x2 = -28 + 28 + 3x + -3x + x2 + -1x2

Combine like terms: -28 + 28 = 0
28 + -3x + xF + -1x2 = 0 + 3x + -3x + x2 + -1x2
28 + -3x + xF + -1x2 = 3x + -3x + x2 + -1x2

Combine like terms: 3x + -3x = 0
28 + -3x + xF + -1x2 = 0 + x2 + -1x2
28 + -3x + xF + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
28 + -3x + xF + -1x2 = 0

The solution to this equation could not be determined.

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