(-2-x)(-2-x)+4=0

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Solution for (-2-x)(-2-x)+4=0 equation:


Simplifying
(-2 + -1x)(-2 + -1x) + 4 = 0

Multiply (-2 + -1x) * (-2 + -1x)
(-2(-2 + -1x) + -1x * (-2 + -1x)) + 4 = 0
((-2 * -2 + -1x * -2) + -1x * (-2 + -1x)) + 4 = 0
((4 + 2x) + -1x * (-2 + -1x)) + 4 = 0
(4 + 2x + (-2 * -1x + -1x * -1x)) + 4 = 0
(4 + 2x + (2x + 1x2)) + 4 = 0

Combine like terms: 2x + 2x = 4x
(4 + 4x + 1x2) + 4 = 0

Reorder the terms:
4 + 4 + 4x + 1x2 = 0

Combine like terms: 4 + 4 = 8
8 + 4x + 1x2 = 0

Solving
8 + 4x + 1x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-8' to each side of the equation.
8 + 4x + -8 + x2 = 0 + -8

Reorder the terms:
8 + -8 + 4x + x2 = 0 + -8

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

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

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 = -8 + 4

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

Combine like terms: -8 + 4 = -4
4 + 4x + x2 = -4

Factor a perfect square on the left side:
(x + 2)(x + 2) = -4

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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