x^2+12x+216=0

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Solution for x^2+12x+216=0 equation:


Simplifying
x2 + 12x + 216 = 0

Reorder the terms:
216 + 12x + x2 = 0

Solving
216 + 12x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-216' to each side of the equation.
216 + 12x + -216 + x2 = 0 + -216

Reorder the terms:
216 + -216 + 12x + x2 = 0 + -216

Combine like terms: 216 + -216 = 0
0 + 12x + x2 = 0 + -216
12x + x2 = 0 + -216

Combine like terms: 0 + -216 = -216
12x + x2 = -216

The x term is 12x.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12x + 36 + x2 = -216 + 36

Reorder the terms:
36 + 12x + x2 = -216 + 36

Combine like terms: -216 + 36 = -180
36 + 12x + x2 = -180

Factor a perfect square on the left side:
(x + 6)(x + 6) = -180

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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