5x^2+23x-5=0

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


Simplifying
5x2 + 23x + -5 = 0

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

Solving
-5 + 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'.
-1 + 4.6x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 4.6x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + 4.6x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 4.6x + x2 = 0 + 1
4.6x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
4.6x + x2 = 1

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 = 1 + 5.29

Reorder the terms:
5.29 + 4.6x + x2 = 1 + 5.29

Combine like terms: 1 + 5.29 = 6.29
5.29 + 4.6x + x2 = 6.29

Factor a perfect square on the left side:
(x + 2.3)(x + 2.3) = 6.29

Calculate the square root of the right side: 2.507987241

Break this problem into two subproblems by setting 
(x + 2.3) equal to 2.507987241 and -2.507987241.

Subproblem 1

x + 2.3 = 2.507987241 Simplifying x + 2.3 = 2.507987241 Reorder the terms: 2.3 + x = 2.507987241 Solving 2.3 + x = 2.507987241 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 = 2.507987241 + -2.3 Combine like terms: 2.3 + -2.3 = 0.0 0.0 + x = 2.507987241 + -2.3 x = 2.507987241 + -2.3 Combine like terms: 2.507987241 + -2.3 = 0.207987241 x = 0.207987241 Simplifying x = 0.207987241

Subproblem 2

x + 2.3 = -2.507987241 Simplifying x + 2.3 = -2.507987241 Reorder the terms: 2.3 + x = -2.507987241 Solving 2.3 + x = -2.507987241 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 = -2.507987241 + -2.3 Combine like terms: 2.3 + -2.3 = 0.0 0.0 + x = -2.507987241 + -2.3 x = -2.507987241 + -2.3 Combine like terms: -2.507987241 + -2.3 = -4.807987241 x = -4.807987241 Simplifying x = -4.807987241

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.207987241, -4.807987241}

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