x^2+23x-4=0

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Solution for x^2+23x-4=0 equation:


Simplifying
x2 + 23x + -4 = 0

Reorder the terms:
-4 + 23x + x2 = 0

Solving
-4 + 23x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + 23x + 4 + x2 = 0 + 4

Reorder the terms:
-4 + 4 + 23x + x2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 23x + x2 = 0 + 4
23x + x2 = 0 + 4

Combine like terms: 0 + 4 = 4
23x + x2 = 4

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 = 4 + 132.25

Reorder the terms:
132.25 + 23x + x2 = 4 + 132.25

Combine like terms: 4 + 132.25 = 136.25
132.25 + 23x + x2 = 136.25

Factor a perfect square on the left side:
(x + 11.5)(x + 11.5) = 136.25

Calculate the square root of the right side: 11.67261753

Break this problem into two subproblems by setting 
(x + 11.5) equal to 11.67261753 and -11.67261753.

Subproblem 1

x + 11.5 = 11.67261753 Simplifying x + 11.5 = 11.67261753 Reorder the terms: 11.5 + x = 11.67261753 Solving 11.5 + x = 11.67261753 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 = 11.67261753 + -11.5 Combine like terms: 11.5 + -11.5 = 0.0 0.0 + x = 11.67261753 + -11.5 x = 11.67261753 + -11.5 Combine like terms: 11.67261753 + -11.5 = 0.17261753 x = 0.17261753 Simplifying x = 0.17261753

Subproblem 2

x + 11.5 = -11.67261753 Simplifying x + 11.5 = -11.67261753 Reorder the terms: 11.5 + x = -11.67261753 Solving 11.5 + x = -11.67261753 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 = -11.67261753 + -11.5 Combine like terms: 11.5 + -11.5 = 0.0 0.0 + x = -11.67261753 + -11.5 x = -11.67261753 + -11.5 Combine like terms: -11.67261753 + -11.5 = -23.17261753 x = -23.17261753 Simplifying x = -23.17261753

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.17261753, -23.17261753}

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