6x^2-19x-136=0

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Solution for 6x^2-19x-136=0 equation:


Simplifying
6x2 + -19x + -136 = 0

Reorder the terms:
-136 + -19x + 6x2 = 0

Solving
-136 + -19x + 6x2 = 0

Solving for variable 'x'.

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

Divide each side by '6'.
-22.66666667 + -3.166666667x + x2 = 0

Move the constant term to the right:

Add '22.66666667' to each side of the equation.
-22.66666667 + -3.166666667x + 22.66666667 + x2 = 0 + 22.66666667

Reorder the terms:
-22.66666667 + 22.66666667 + -3.166666667x + x2 = 0 + 22.66666667

Combine like terms: -22.66666667 + 22.66666667 = 0.00000000
0.00000000 + -3.166666667x + x2 = 0 + 22.66666667
-3.166666667x + x2 = 0 + 22.66666667

Combine like terms: 0 + 22.66666667 = 22.66666667
-3.166666667x + x2 = 22.66666667

The x term is -3.166666667x.  Take half its coefficient (-1.583333334).
Square it (2.506944447) and add it to both sides.

Add '2.506944447' to each side of the equation.
-3.166666667x + 2.506944447 + x2 = 22.66666667 + 2.506944447

Reorder the terms:
2.506944447 + -3.166666667x + x2 = 22.66666667 + 2.506944447

Combine like terms: 22.66666667 + 2.506944447 = 25.173611117
2.506944447 + -3.166666667x + x2 = 25.173611117

Factor a perfect square on the left side:
(x + -1.583333334)(x + -1.583333334) = 25.173611117

Calculate the square root of the right side: 5.017331075

Break this problem into two subproblems by setting 
(x + -1.583333334) equal to 5.017331075 and -5.017331075.

Subproblem 1

x + -1.583333334 = 5.017331075 Simplifying x + -1.583333334 = 5.017331075 Reorder the terms: -1.583333334 + x = 5.017331075 Solving -1.583333334 + x = 5.017331075 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.583333334' to each side of the equation. -1.583333334 + 1.583333334 + x = 5.017331075 + 1.583333334 Combine like terms: -1.583333334 + 1.583333334 = 0.000000000 0.000000000 + x = 5.017331075 + 1.583333334 x = 5.017331075 + 1.583333334 Combine like terms: 5.017331075 + 1.583333334 = 6.600664409 x = 6.600664409 Simplifying x = 6.600664409

Subproblem 2

x + -1.583333334 = -5.017331075 Simplifying x + -1.583333334 = -5.017331075 Reorder the terms: -1.583333334 + x = -5.017331075 Solving -1.583333334 + x = -5.017331075 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.583333334' to each side of the equation. -1.583333334 + 1.583333334 + x = -5.017331075 + 1.583333334 Combine like terms: -1.583333334 + 1.583333334 = 0.000000000 0.000000000 + x = -5.017331075 + 1.583333334 x = -5.017331075 + 1.583333334 Combine like terms: -5.017331075 + 1.583333334 = -3.433997741 x = -3.433997741 Simplifying x = -3.433997741

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.600664409, -3.433997741}

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