F(x)=-4(x-3)(x+5)

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Solution for F(x)=-4(x-3)(x+5) equation: 


Simplifying
F(x) = -4(x + -3)(x + 5)

Multiply F * x
xF = -4(x + -3)(x + 5)

Reorder the terms:
xF = -4(-3 + x)(x + 5)

Reorder the terms:
xF = -4(-3 + x)(5 + x)

Multiply (-3 + x) * (5 + x)
xF = -4(-3(5 + x) + x(5 + x))
xF = -4((5 * -3 + x * -3) + x(5 + x))
xF = -4((-15 + -3x) + x(5 + x))
xF = -4(-15 + -3x + (5 * x + x * x))
xF = -4(-15 + -3x + (5x + x2))

Combine like terms: -3x + 5x = 2x
xF = -4(-15 + 2x + x2)
xF = (-15 * -4 + 2x * -4 + x2 * -4)
xF = (60 + -8x + -4x2)

Solving
xF = 60 + -8x + -4x2

Solving for variable 'x'.

Reorder the terms:
-60 + 8x + xF + 4x2 = 60 + -8x + -4x2 + -60 + 8x + 4x2

Reorder the terms:
-60 + 8x + xF + 4x2 = 60 + -60 + -8x + 8x + -4x2 + 4x2

Combine like terms: 60 + -60 = 0
-60 + 8x + xF + 4x2 = 0 + -8x + 8x + -4x2 + 4x2
-60 + 8x + xF + 4x2 = -8x + 8x + -4x2 + 4x2

Combine like terms: -8x + 8x = 0
-60 + 8x + xF + 4x2 = 0 + -4x2 + 4x2
-60 + 8x + xF + 4x2 = -4x2 + 4x2

Combine like terms: -4x2 + 4x2 = 0
-60 + 8x + xF + 4x2 = 0

The solution to this equation could not be determined.

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