36x^2-24x=131

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Solution for 36x^2-24x=131 equation:


Simplifying
36x2 + -24x = 131

Reorder the terms:
-24x + 36x2 = 131

Solving
-24x + 36x2 = 131

Solving for variable 'x'.

Reorder the terms:
-131 + -24x + 36x2 = 131 + -131

Combine like terms: 131 + -131 = 0
-131 + -24x + 36x2 = 0

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

Divide each side by '36'.
-3.638888889 + -0.6666666667x + x2 = 0

Move the constant term to the right:

Add '3.638888889' to each side of the equation.
-3.638888889 + -0.6666666667x + 3.638888889 + x2 = 0 + 3.638888889

Reorder the terms:
-3.638888889 + 3.638888889 + -0.6666666667x + x2 = 0 + 3.638888889

Combine like terms: -3.638888889 + 3.638888889 = 0.000000000
0.000000000 + -0.6666666667x + x2 = 0 + 3.638888889
-0.6666666667x + x2 = 0 + 3.638888889

Combine like terms: 0 + 3.638888889 = 3.638888889
-0.6666666667x + x2 = 3.638888889

The x term is -0.6666666667x.  Take half its coefficient (-0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
-0.6666666667x + 0.1111111112 + x2 = 3.638888889 + 0.1111111112

Reorder the terms:
0.1111111112 + -0.6666666667x + x2 = 3.638888889 + 0.1111111112

Combine like terms: 3.638888889 + 0.1111111112 = 3.7500000002
0.1111111112 + -0.6666666667x + x2 = 3.7500000002

Factor a perfect square on the left side:
(x + -0.3333333334)(x + -0.3333333334) = 3.7500000002

Calculate the square root of the right side: 1.936491673

Break this problem into two subproblems by setting 
(x + -0.3333333334) equal to 1.936491673 and -1.936491673.

Subproblem 1

x + -0.3333333334 = 1.936491673 Simplifying x + -0.3333333334 = 1.936491673 Reorder the terms: -0.3333333334 + x = 1.936491673 Solving -0.3333333334 + x = 1.936491673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + x = 1.936491673 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + x = 1.936491673 + 0.3333333334 x = 1.936491673 + 0.3333333334 Combine like terms: 1.936491673 + 0.3333333334 = 2.2698250064 x = 2.2698250064 Simplifying x = 2.2698250064

Subproblem 2

x + -0.3333333334 = -1.936491673 Simplifying x + -0.3333333334 = -1.936491673 Reorder the terms: -0.3333333334 + x = -1.936491673 Solving -0.3333333334 + x = -1.936491673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + x = -1.936491673 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + x = -1.936491673 + 0.3333333334 x = -1.936491673 + 0.3333333334 Combine like terms: -1.936491673 + 0.3333333334 = -1.6031583396 x = -1.6031583396 Simplifying x = -1.6031583396

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.2698250064, -1.6031583396}

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