x^2+6x+9=-20

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Solution for x^2+6x+9=-20 equation:


Simplifying
x2 + 6x + 9 = -20

Reorder the terms:
9 + 6x + x2 = -20

Solving
9 + 6x + x2 = -20

Solving for variable 'x'.

Reorder the terms:
9 + 20 + 6x + x2 = -20 + 20

Combine like terms: 9 + 20 = 29
29 + 6x + x2 = -20 + 20

Combine like terms: -20 + 20 = 0
29 + 6x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-29' to each side of the equation.
29 + 6x + -29 + x2 = 0 + -29

Reorder the terms:
29 + -29 + 6x + x2 = 0 + -29

Combine like terms: 29 + -29 = 0
0 + 6x + x2 = 0 + -29
6x + x2 = 0 + -29

Combine like terms: 0 + -29 = -29
6x + x2 = -29

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 = -29 + 9

Reorder the terms:
9 + 6x + x2 = -29 + 9

Combine like terms: -29 + 9 = -20
9 + 6x + x2 = -20

Factor a perfect square on the left side:
(x + 3)(x + 3) = -20

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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