23x^2-15=6x

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Solution for 23x^2-15=6x equation:


Simplifying
23x2 + -15 = 6x

Reorder the terms:
-15 + 23x2 = 6x

Solving
-15 + 23x2 = 6x

Solving for variable 'x'.

Reorder the terms:
-15 + -6x + 23x2 = 6x + -6x

Combine like terms: 6x + -6x = 0
-15 + -6x + 23x2 = 0

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

Divide each side by '23'.
-0.652173913 + -0.2608695652x + x2 = 0

Move the constant term to the right:

Add '0.652173913' to each side of the equation.
-0.652173913 + -0.2608695652x + 0.652173913 + x2 = 0 + 0.652173913

Reorder the terms:
-0.652173913 + 0.652173913 + -0.2608695652x + x2 = 0 + 0.652173913

Combine like terms: -0.652173913 + 0.652173913 = 0.000000000
0.000000000 + -0.2608695652x + x2 = 0 + 0.652173913
-0.2608695652x + x2 = 0 + 0.652173913

Combine like terms: 0 + 0.652173913 = 0.652173913
-0.2608695652x + x2 = 0.652173913

The x term is -0.2608695652x.  Take half its coefficient (-0.1304347826).
Square it (0.01701323251) and add it to both sides.

Add '0.01701323251' to each side of the equation.
-0.2608695652x + 0.01701323251 + x2 = 0.652173913 + 0.01701323251

Reorder the terms:
0.01701323251 + -0.2608695652x + x2 = 0.652173913 + 0.01701323251

Combine like terms: 0.652173913 + 0.01701323251 = 0.66918714551
0.01701323251 + -0.2608695652x + x2 = 0.66918714551

Factor a perfect square on the left side:
(x + -0.1304347826)(x + -0.1304347826) = 0.66918714551

Calculate the square root of the right side: 0.818038597

Break this problem into two subproblems by setting 
(x + -0.1304347826) equal to 0.818038597 and -0.818038597.

Subproblem 1

x + -0.1304347826 = 0.818038597 Simplifying x + -0.1304347826 = 0.818038597 Reorder the terms: -0.1304347826 + x = 0.818038597 Solving -0.1304347826 + x = 0.818038597 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1304347826' to each side of the equation. -0.1304347826 + 0.1304347826 + x = 0.818038597 + 0.1304347826 Combine like terms: -0.1304347826 + 0.1304347826 = 0.0000000000 0.0000000000 + x = 0.818038597 + 0.1304347826 x = 0.818038597 + 0.1304347826 Combine like terms: 0.818038597 + 0.1304347826 = 0.9484733796 x = 0.9484733796 Simplifying x = 0.9484733796

Subproblem 2

x + -0.1304347826 = -0.818038597 Simplifying x + -0.1304347826 = -0.818038597 Reorder the terms: -0.1304347826 + x = -0.818038597 Solving -0.1304347826 + x = -0.818038597 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1304347826' to each side of the equation. -0.1304347826 + 0.1304347826 + x = -0.818038597 + 0.1304347826 Combine like terms: -0.1304347826 + 0.1304347826 = 0.0000000000 0.0000000000 + x = -0.818038597 + 0.1304347826 x = -0.818038597 + 0.1304347826 Combine like terms: -0.818038597 + 0.1304347826 = -0.6876038144 x = -0.6876038144 Simplifying x = -0.6876038144

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.9484733796, -0.6876038144}

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