x^2+6x+9=-15

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Solution for x^2+6x+9=-15 equation:


Simplifying
x2 + 6x + 9 = -15

Reorder the terms:
9 + 6x + x2 = -15

Solving
9 + 6x + x2 = -15

Solving for variable 'x'.

Reorder the terms:
9 + 15 + 6x + x2 = -15 + 15

Combine like terms: 9 + 15 = 24
24 + 6x + x2 = -15 + 15

Combine like terms: -15 + 15 = 0
24 + 6x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-24' to each side of the equation.
24 + 6x + -24 + x2 = 0 + -24

Reorder the terms:
24 + -24 + 6x + x2 = 0 + -24

Combine like terms: 24 + -24 = 0
0 + 6x + x2 = 0 + -24
6x + x2 = 0 + -24

Combine like terms: 0 + -24 = -24
6x + x2 = -24

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 = -24 + 9

Reorder the terms:
9 + 6x + x2 = -24 + 9

Combine like terms: -24 + 9 = -15
9 + 6x + x2 = -15

Factor a perfect square on the left side:
(x + 3)(x + 3) = -15

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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