x^2+23x+12=0

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Solution for x^2+23x+12=0 equation:


Simplifying
x2 + 23x + 12 = 0

Reorder the terms:
12 + 23x + x2 = 0

Solving
12 + 23x + 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 + 23x + -12 + x2 = 0 + -12

Reorder the terms:
12 + -12 + 23x + x2 = 0 + -12

Combine like terms: 12 + -12 = 0
0 + 23x + x2 = 0 + -12
23x + x2 = 0 + -12

Combine like terms: 0 + -12 = -12
23x + x2 = -12

The x term is 23x.  Take half its coefficient (11.5).
Square it (132.25) and add it to both sides.

Add '132.25' to each side of the equation.
23x + 132.25 + x2 = -12 + 132.25

Reorder the terms:
132.25 + 23x + x2 = -12 + 132.25

Combine like terms: -12 + 132.25 = 120.25
132.25 + 23x + x2 = 120.25

Factor a perfect square on the left side:
(x + 11.5)(x + 11.5) = 120.25

Calculate the square root of the right side: 10.9658561

Break this problem into two subproblems by setting 
(x + 11.5) equal to 10.9658561 and -10.9658561.

Subproblem 1

x + 11.5 = 10.9658561 Simplifying x + 11.5 = 10.9658561 Reorder the terms: 11.5 + x = 10.9658561 Solving 11.5 + x = 10.9658561 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11.5' to each side of the equation. 11.5 + -11.5 + x = 10.9658561 + -11.5 Combine like terms: 11.5 + -11.5 = 0.0 0.0 + x = 10.9658561 + -11.5 x = 10.9658561 + -11.5 Combine like terms: 10.9658561 + -11.5 = -0.5341439 x = -0.5341439 Simplifying x = -0.5341439

Subproblem 2

x + 11.5 = -10.9658561 Simplifying x + 11.5 = -10.9658561 Reorder the terms: 11.5 + x = -10.9658561 Solving 11.5 + x = -10.9658561 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11.5' to each side of the equation. 11.5 + -11.5 + x = -10.9658561 + -11.5 Combine like terms: 11.5 + -11.5 = 0.0 0.0 + x = -10.9658561 + -11.5 x = -10.9658561 + -11.5 Combine like terms: -10.9658561 + -11.5 = -22.4658561 x = -22.4658561 Simplifying x = -22.4658561

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.5341439, -22.4658561}

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