x^2+22x+23=0

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Solution for x^2+22x+23=0 equation:


Simplifying
x2 + 22x + 23 = 0

Reorder the terms:
23 + 22x + x2 = 0

Solving
23 + 22x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-23' to each side of the equation.
23 + 22x + -23 + x2 = 0 + -23

Reorder the terms:
23 + -23 + 22x + x2 = 0 + -23

Combine like terms: 23 + -23 = 0
0 + 22x + x2 = 0 + -23
22x + x2 = 0 + -23

Combine like terms: 0 + -23 = -23
22x + x2 = -23

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 = -23 + 121

Reorder the terms:
121 + 22x + x2 = -23 + 121

Combine like terms: -23 + 121 = 98
121 + 22x + x2 = 98

Factor a perfect square on the left side:
(x + 11)(x + 11) = 98

Calculate the square root of the right side: 9.899494937

Break this problem into two subproblems by setting 
(x + 11) equal to 9.899494937 and -9.899494937.

Subproblem 1

x + 11 = 9.899494937 Simplifying x + 11 = 9.899494937 Reorder the terms: 11 + x = 9.899494937 Solving 11 + x = 9.899494937 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 = 9.899494937 + -11 Combine like terms: 11 + -11 = 0 0 + x = 9.899494937 + -11 x = 9.899494937 + -11 Combine like terms: 9.899494937 + -11 = -1.100505063 x = -1.100505063 Simplifying x = -1.100505063

Subproblem 2

x + 11 = -9.899494937 Simplifying x + 11 = -9.899494937 Reorder the terms: 11 + x = -9.899494937 Solving 11 + x = -9.899494937 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 = -9.899494937 + -11 Combine like terms: 11 + -11 = 0 0 + x = -9.899494937 + -11 x = -9.899494937 + -11 Combine like terms: -9.899494937 + -11 = -20.899494937 x = -20.899494937 Simplifying x = -20.899494937

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.100505063, -20.899494937}

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