x^2+8x=-23

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Solution for x^2+8x=-23 equation:


Simplifying
x2 + 8x = -23

Reorder the terms:
8x + x2 = -23

Solving
8x + x2 = -23

Solving for variable 'x'.

Reorder the terms:
23 + 8x + x2 = -23 + 23

Combine like terms: -23 + 23 = 0
23 + 8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-23' to each side of the equation.
23 + 8x + -23 + x2 = 0 + -23

Reorder the terms:
23 + -23 + 8x + x2 = 0 + -23

Combine like terms: 23 + -23 = 0
0 + 8x + x2 = 0 + -23
8x + x2 = 0 + -23

Combine like terms: 0 + -23 = -23
8x + x2 = -23

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = -23 + 16

Reorder the terms:
16 + 8x + x2 = -23 + 16

Combine like terms: -23 + 16 = -7
16 + 8x + x2 = -7

Factor a perfect square on the left side:
(x + 4)(x + 4) = -7

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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