(x+2)(x-6)=-18

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Solution for (x+2)(x-6)=-18 equation:


Simplifying
(x + 2)(x + -6) = -18

Reorder the terms:
(2 + x)(x + -6) = -18

Reorder the terms:
(2 + x)(-6 + x) = -18

Multiply (2 + x) * (-6 + x)
(2(-6 + x) + x(-6 + x)) = -18
((-6 * 2 + x * 2) + x(-6 + x)) = -18
((-12 + 2x) + x(-6 + x)) = -18
(-12 + 2x + (-6 * x + x * x)) = -18
(-12 + 2x + (-6x + x2)) = -18

Combine like terms: 2x + -6x = -4x
(-12 + -4x + x2) = -18

Solving
-12 + -4x + x2 = -18

Solving for variable 'x'.

Reorder the terms:
-12 + 18 + -4x + x2 = -18 + 18

Combine like terms: -12 + 18 = 6
6 + -4x + x2 = -18 + 18

Combine like terms: -18 + 18 = 0
6 + -4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-6' to each side of the equation.
6 + -4x + -6 + x2 = 0 + -6

Reorder the terms:
6 + -6 + -4x + x2 = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -4x + x2 = 0 + -6
-4x + x2 = 0 + -6

Combine like terms: 0 + -6 = -6
-4x + x2 = -6

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = -6 + 4

Reorder the terms:
4 + -4x + x2 = -6 + 4

Combine like terms: -6 + 4 = -2
4 + -4x + x2 = -2

Factor a perfect square on the left side:
(x + -2)(x + -2) = -2

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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