12x^2-17x-23=0

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Solution for 12x^2-17x-23=0 equation:


Simplifying
12x2 + -17x + -23 = 0

Reorder the terms:
-23 + -17x + 12x2 = 0

Solving
-23 + -17x + 12x2 = 0

Solving for variable 'x'.

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

Divide each side by '12'.
-1.916666667 + -1.416666667x + x2 = 0

Move the constant term to the right:

Add '1.916666667' to each side of the equation.
-1.916666667 + -1.416666667x + 1.916666667 + x2 = 0 + 1.916666667

Reorder the terms:
-1.916666667 + 1.916666667 + -1.416666667x + x2 = 0 + 1.916666667

Combine like terms: -1.916666667 + 1.916666667 = 0.000000000
0.000000000 + -1.416666667x + x2 = 0 + 1.916666667
-1.416666667x + x2 = 0 + 1.916666667

Combine like terms: 0 + 1.916666667 = 1.916666667
-1.416666667x + x2 = 1.916666667

The x term is -1.416666667x.  Take half its coefficient (-0.7083333335).
Square it (0.5017361113) and add it to both sides.

Add '0.5017361113' to each side of the equation.
-1.416666667x + 0.5017361113 + x2 = 1.916666667 + 0.5017361113

Reorder the terms:
0.5017361113 + -1.416666667x + x2 = 1.916666667 + 0.5017361113

Combine like terms: 1.916666667 + 0.5017361113 = 2.4184027783
0.5017361113 + -1.416666667x + x2 = 2.4184027783

Factor a perfect square on the left side:
(x + -0.7083333335)(x + -0.7083333335) = 2.4184027783

Calculate the square root of the right side: 1.555121467

Break this problem into two subproblems by setting 
(x + -0.7083333335) equal to 1.555121467 and -1.555121467.

Subproblem 1

x + -0.7083333335 = 1.555121467 Simplifying x + -0.7083333335 = 1.555121467 Reorder the terms: -0.7083333335 + x = 1.555121467 Solving -0.7083333335 + x = 1.555121467 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.7083333335' to each side of the equation. -0.7083333335 + 0.7083333335 + x = 1.555121467 + 0.7083333335 Combine like terms: -0.7083333335 + 0.7083333335 = 0.0000000000 0.0000000000 + x = 1.555121467 + 0.7083333335 x = 1.555121467 + 0.7083333335 Combine like terms: 1.555121467 + 0.7083333335 = 2.2634548005 x = 2.2634548005 Simplifying x = 2.2634548005

Subproblem 2

x + -0.7083333335 = -1.555121467 Simplifying x + -0.7083333335 = -1.555121467 Reorder the terms: -0.7083333335 + x = -1.555121467 Solving -0.7083333335 + x = -1.555121467 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.7083333335' to each side of the equation. -0.7083333335 + 0.7083333335 + x = -1.555121467 + 0.7083333335 Combine like terms: -0.7083333335 + 0.7083333335 = 0.0000000000 0.0000000000 + x = -1.555121467 + 0.7083333335 x = -1.555121467 + 0.7083333335 Combine like terms: -1.555121467 + 0.7083333335 = -0.8467881335 x = -0.8467881335 Simplifying x = -0.8467881335

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.2634548005, -0.8467881335}

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