2x^2+23x-3=0

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Solution for 2x^2+23x-3=0 equation:


Simplifying
2x2 + 23x + -3 = 0

Reorder the terms:
-3 + 23x + 2x2 = 0

Solving
-3 + 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'.
-1.5 + 11.5x + x2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + 11.5x + 1.5 + x2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + 11.5x + x2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + 11.5x + x2 = 0 + 1.5
11.5x + x2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
11.5x + x2 = 1.5

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 = 1.5 + 33.0625

Reorder the terms:
33.0625 + 11.5x + x2 = 1.5 + 33.0625

Combine like terms: 1.5 + 33.0625 = 34.5625
33.0625 + 11.5x + x2 = 34.5625

Factor a perfect square on the left side:
(x + 5.75)(x + 5.75) = 34.5625

Calculate the square root of the right side: 5.878988008

Break this problem into two subproblems by setting 
(x + 5.75) equal to 5.878988008 and -5.878988008.

Subproblem 1

x + 5.75 = 5.878988008 Simplifying x + 5.75 = 5.878988008 Reorder the terms: 5.75 + x = 5.878988008 Solving 5.75 + x = 5.878988008 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 = 5.878988008 + -5.75 Combine like terms: 5.75 + -5.75 = 0.00 0.00 + x = 5.878988008 + -5.75 x = 5.878988008 + -5.75 Combine like terms: 5.878988008 + -5.75 = 0.128988008 x = 0.128988008 Simplifying x = 0.128988008

Subproblem 2

x + 5.75 = -5.878988008 Simplifying x + 5.75 = -5.878988008 Reorder the terms: 5.75 + x = -5.878988008 Solving 5.75 + x = -5.878988008 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 = -5.878988008 + -5.75 Combine like terms: 5.75 + -5.75 = 0.00 0.00 + x = -5.878988008 + -5.75 x = -5.878988008 + -5.75 Combine like terms: -5.878988008 + -5.75 = -11.628988008 x = -11.628988008 Simplifying x = -11.628988008

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.128988008, -11.628988008}

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