5x^2+23x-2=0

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Solution for 5x^2+23x-2=0 equation:


Simplifying
5x2 + 23x + -2 = 0

Reorder the terms:
-2 + 23x + 5x2 = 0

Solving
-2 + 23x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-0.4 + 4.6x + x2 = 0

Move the constant term to the right:

Add '0.4' to each side of the equation.
-0.4 + 4.6x + 0.4 + x2 = 0 + 0.4

Reorder the terms:
-0.4 + 0.4 + 4.6x + x2 = 0 + 0.4

Combine like terms: -0.4 + 0.4 = 0.0
0.0 + 4.6x + x2 = 0 + 0.4
4.6x + x2 = 0 + 0.4

Combine like terms: 0 + 0.4 = 0.4
4.6x + x2 = 0.4

The x term is 4.6x.  Take half its coefficient (2.3).
Square it (5.29) and add it to both sides.

Add '5.29' to each side of the equation.
4.6x + 5.29 + x2 = 0.4 + 5.29

Reorder the terms:
5.29 + 4.6x + x2 = 0.4 + 5.29

Combine like terms: 0.4 + 5.29 = 5.69
5.29 + 4.6x + x2 = 5.69

Factor a perfect square on the left side:
(x + 2.3)(x + 2.3) = 5.69

Calculate the square root of the right side: 2.385372088

Break this problem into two subproblems by setting 
(x + 2.3) equal to 2.385372088 and -2.385372088.

Subproblem 1

x + 2.3 = 2.385372088 Simplifying x + 2.3 = 2.385372088 Reorder the terms: 2.3 + x = 2.385372088 Solving 2.3 + x = 2.385372088 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.3' to each side of the equation. 2.3 + -2.3 + x = 2.385372088 + -2.3 Combine like terms: 2.3 + -2.3 = 0.0 0.0 + x = 2.385372088 + -2.3 x = 2.385372088 + -2.3 Combine like terms: 2.385372088 + -2.3 = 0.085372088 x = 0.085372088 Simplifying x = 0.085372088

Subproblem 2

x + 2.3 = -2.385372088 Simplifying x + 2.3 = -2.385372088 Reorder the terms: 2.3 + x = -2.385372088 Solving 2.3 + x = -2.385372088 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.3' to each side of the equation. 2.3 + -2.3 + x = -2.385372088 + -2.3 Combine like terms: 2.3 + -2.3 = 0.0 0.0 + x = -2.385372088 + -2.3 x = -2.385372088 + -2.3 Combine like terms: -2.385372088 + -2.3 = -4.685372088 x = -4.685372088 Simplifying x = -4.685372088

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.085372088, -4.685372088}

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