x^2+22x+12=0

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Solution for x^2+22x+12=0 equation:


Simplifying
x2 + 22x + 12 = 0

Reorder the terms:
12 + 22x + x2 = 0

Solving
12 + 22x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-12' to each side of the equation.
12 + 22x + -12 + x2 = 0 + -12

Reorder the terms:
12 + -12 + 22x + x2 = 0 + -12

Combine like terms: 12 + -12 = 0
0 + 22x + x2 = 0 + -12
22x + x2 = 0 + -12

Combine like terms: 0 + -12 = -12
22x + x2 = -12

The x term is 22x.  Take half its coefficient (11).
Square it (121) and add it to both sides.

Add '121' to each side of the equation.
22x + 121 + x2 = -12 + 121

Reorder the terms:
121 + 22x + x2 = -12 + 121

Combine like terms: -12 + 121 = 109
121 + 22x + x2 = 109

Factor a perfect square on the left side:
(x + 11)(x + 11) = 109

Calculate the square root of the right side: 10.440306509

Break this problem into two subproblems by setting 
(x + 11) equal to 10.440306509 and -10.440306509.

Subproblem 1

x + 11 = 10.440306509 Simplifying x + 11 = 10.440306509 Reorder the terms: 11 + x = 10.440306509 Solving 11 + x = 10.440306509 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + x = 10.440306509 + -11 Combine like terms: 11 + -11 = 0 0 + x = 10.440306509 + -11 x = 10.440306509 + -11 Combine like terms: 10.440306509 + -11 = -0.559693491 x = -0.559693491 Simplifying x = -0.559693491

Subproblem 2

x + 11 = -10.440306509 Simplifying x + 11 = -10.440306509 Reorder the terms: 11 + x = -10.440306509 Solving 11 + x = -10.440306509 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + x = -10.440306509 + -11 Combine like terms: 11 + -11 = 0 0 + x = -10.440306509 + -11 x = -10.440306509 + -11 Combine like terms: -10.440306509 + -11 = -21.440306509 x = -21.440306509 Simplifying x = -21.440306509

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.559693491, -21.440306509}

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