x*x+6x+8=-2

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Solution for x*x+6x+8=-2 equation:


Simplifying
x * x + 6x + 8 = -2

Multiply x * x
x2 + 6x + 8 = -2

Reorder the terms:
8 + 6x + x2 = -2

Solving
8 + 6x + x2 = -2

Solving for variable 'x'.

Reorder the terms:
8 + 2 + 6x + x2 = -2 + 2

Combine like terms: 8 + 2 = 10
10 + 6x + x2 = -2 + 2

Combine like terms: -2 + 2 = 0
10 + 6x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-10' to each side of the equation.
10 + 6x + -10 + x2 = 0 + -10

Reorder the terms:
10 + -10 + 6x + x2 = 0 + -10

Combine like terms: 10 + -10 = 0
0 + 6x + x2 = 0 + -10
6x + x2 = 0 + -10

Combine like terms: 0 + -10 = -10
6x + x2 = -10

The x term is 6x.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6x + 9 + x2 = -10 + 9

Reorder the terms:
9 + 6x + x2 = -10 + 9

Combine like terms: -10 + 9 = -1
9 + 6x + x2 = -1

Factor a perfect square on the left side:
(x + 3)(x + 3) = -1

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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