2x^2+23x-2=0

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


Simplifying
2x2 + 23x + -2 = 0

Reorder the terms:
-2 + 23x + 2x2 = 0

Solving
-2 + 23x + 2x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
-1 + 11.5x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 11.5x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + 11.5x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 11.5x + x2 = 0 + 1
11.5x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
11.5x + x2 = 1

The x term is 11.5x.  Take half its coefficient (5.75).
Square it (33.0625) and add it to both sides.

Add '33.0625' to each side of the equation.
11.5x + 33.0625 + x2 = 1 + 33.0625

Reorder the terms:
33.0625 + 11.5x + x2 = 1 + 33.0625

Combine like terms: 1 + 33.0625 = 34.0625
33.0625 + 11.5x + x2 = 34.0625

Factor a perfect square on the left side:
(x + 5.75)(x + 5.75) = 34.0625

Calculate the square root of the right side: 5.836308765

Break this problem into two subproblems by setting 
(x + 5.75) equal to 5.836308765 and -5.836308765.

Subproblem 1

x + 5.75 = 5.836308765 Simplifying x + 5.75 = 5.836308765 Reorder the terms: 5.75 + x = 5.836308765 Solving 5.75 + x = 5.836308765 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.75' to each side of the equation. 5.75 + -5.75 + x = 5.836308765 + -5.75 Combine like terms: 5.75 + -5.75 = 0.00 0.00 + x = 5.836308765 + -5.75 x = 5.836308765 + -5.75 Combine like terms: 5.836308765 + -5.75 = 0.086308765 x = 0.086308765 Simplifying x = 0.086308765

Subproblem 2

x + 5.75 = -5.836308765 Simplifying x + 5.75 = -5.836308765 Reorder the terms: 5.75 + x = -5.836308765 Solving 5.75 + x = -5.836308765 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.75' to each side of the equation. 5.75 + -5.75 + x = -5.836308765 + -5.75 Combine like terms: 5.75 + -5.75 = 0.00 0.00 + x = -5.836308765 + -5.75 x = -5.836308765 + -5.75 Combine like terms: -5.836308765 + -5.75 = -11.586308765 x = -11.586308765 Simplifying x = -11.586308765

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.086308765, -11.586308765}

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