(x+4)(x+8)=-64

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Solution for (x+4)(x+8)=-64 equation:


Simplifying
(x + 4)(x + 8) = -64

Reorder the terms:
(4 + x)(x + 8) = -64

Reorder the terms:
(4 + x)(8 + x) = -64

Multiply (4 + x) * (8 + x)
(4(8 + x) + x(8 + x)) = -64
((8 * 4 + x * 4) + x(8 + x)) = -64
((32 + 4x) + x(8 + x)) = -64
(32 + 4x + (8 * x + x * x)) = -64
(32 + 4x + (8x + x2)) = -64

Combine like terms: 4x + 8x = 12x
(32 + 12x + x2) = -64

Solving
32 + 12x + x2 = -64

Solving for variable 'x'.

Reorder the terms:
32 + 64 + 12x + x2 = -64 + 64

Combine like terms: 32 + 64 = 96
96 + 12x + x2 = -64 + 64

Combine like terms: -64 + 64 = 0
96 + 12x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-96' to each side of the equation.
96 + 12x + -96 + x2 = 0 + -96

Reorder the terms:
96 + -96 + 12x + x2 = 0 + -96

Combine like terms: 96 + -96 = 0
0 + 12x + x2 = 0 + -96
12x + x2 = 0 + -96

Combine like terms: 0 + -96 = -96
12x + x2 = -96

The x term is 12x.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12x + 36 + x2 = -96 + 36

Reorder the terms:
36 + 12x + x2 = -96 + 36

Combine like terms: -96 + 36 = -60
36 + 12x + x2 = -60

Factor a perfect square on the left side:
(x + 6)(x + 6) = -60

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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