(X+8)(x-8)=-15

Solution for (X+8)(x-8)=-15 equation:

Simplifying
(X + 8)(x + -8) = -15

Reorder the terms:
(8 + X)(x + -8) = -15

Reorder the terms:
(8 + X)(-8 + x) = -15

Multiply (8 + X) * (-8 + x)
(8(-8 + x) + X(-8 + x)) = -15
((-8 * 8 + x * 8) + X(-8 + x)) = -15
((-64 + 8x) + X(-8 + x)) = -15
(-64 + 8x + (-8 * X + x * X)) = -15
(-64 + 8x + (-8X + xX)) = -15

Reorder the terms:
(-64 + -8X + 8x + xX) = -15
(-64 + -8X + 8x + xX) = -15

Solving
-64 + -8X + 8x + xX = -15

Solving for variable 'X'.

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

Add '64' to each side of the equation.
-64 + -8X + 8x + 64 + xX = -15 + 64

Reorder the terms:
-64 + 64 + -8X + 8x + xX = -15 + 64

Combine like terms: -64 + 64 = 0
0 + -8X + 8x + xX = -15 + 64
-8X + 8x + xX = -15 + 64

Combine like terms: -15 + 64 = 49
-8X + 8x + xX = 49

Add '-8x' to each side of the equation.
-8X + 8x + -8x + xX = 49 + -8x

Combine like terms: 8x + -8x = 0
-8X + 0 + xX = 49 + -8x
-8X + xX = 49 + -8x

Reorder the terms:
-49 + -8X + 8x + xX = 49 + -8x + -49 + 8x

Reorder the terms:
-49 + -8X + 8x + xX = 49 + -49 + -8x + 8x

Combine like terms: 49 + -49 = 0
-49 + -8X + 8x + xX = 0 + -8x + 8x
-49 + -8X + 8x + xX = -8x + 8x

Combine like terms: -8x + 8x = 0
-49 + -8X + 8x + xX = 0

The solution to this equation could not be determined.