(x+4)(x-4)=-55

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Solution for (x+4)(x-4)=-55 equation:


Simplifying
(x + 4)(x + -4) = -55

Reorder the terms:
(4 + x)(x + -4) = -55

Reorder the terms:
(4 + x)(-4 + x) = -55

Multiply (4 + x) * (-4 + x)
(4(-4 + x) + x(-4 + x)) = -55
((-4 * 4 + x * 4) + x(-4 + x)) = -55
((-16 + 4x) + x(-4 + x)) = -55
(-16 + 4x + (-4 * x + x * x)) = -55
(-16 + 4x + (-4x + x2)) = -55

Combine like terms: 4x + -4x = 0
(-16 + 0 + x2) = -55
(-16 + x2) = -55

Solving
-16 + x2 = -55

Solving for variable 'x'.

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

Add '16' to each side of the equation.
-16 + 16 + x2 = -55 + 16

Combine like terms: -16 + 16 = 0
0 + x2 = -55 + 16
x2 = -55 + 16

Combine like terms: -55 + 16 = -39
x2 = -39

Simplifying
x2 = -39

Reorder the terms:
39 + x2 = -39 + 39

Combine like terms: -39 + 39 = 0
39 + x2 = 0

The solution to this equation could not be determined.

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