6x^2-19x-30=0

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Solution for 6x^2-19x-30=0 equation:


Simplifying
6x2 + -19x + -30 = 0

Reorder the terms:
-30 + -19x + 6x2 = 0

Solving
-30 + -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'.
-5 + -3.166666667x + x2 = 0

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + -3.166666667x + 5 + x2 = 0 + 5

Reorder the terms:
-5 + 5 + -3.166666667x + x2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -3.166666667x + x2 = 0 + 5
-3.166666667x + x2 = 0 + 5

Combine like terms: 0 + 5 = 5
-3.166666667x + x2 = 5

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 = 5 + 2.506944447

Reorder the terms:
2.506944447 + -3.166666667x + x2 = 5 + 2.506944447

Combine like terms: 5 + 2.506944447 = 7.506944447
2.506944447 + -3.166666667x + x2 = 7.506944447

Factor a perfect square on the left side:
(x + -1.583333334)(x + -1.583333334) = 7.506944447

Calculate the square root of the right side: 2.739880371

Break this problem into two subproblems by setting 
(x + -1.583333334) equal to 2.739880371 and -2.739880371.

Subproblem 1

x + -1.583333334 = 2.739880371 Simplifying x + -1.583333334 = 2.739880371 Reorder the terms: -1.583333334 + x = 2.739880371 Solving -1.583333334 + x = 2.739880371 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 = 2.739880371 + 1.583333334 Combine like terms: -1.583333334 + 1.583333334 = 0.000000000 0.000000000 + x = 2.739880371 + 1.583333334 x = 2.739880371 + 1.583333334 Combine like terms: 2.739880371 + 1.583333334 = 4.323213705 x = 4.323213705 Simplifying x = 4.323213705

Subproblem 2

x + -1.583333334 = -2.739880371 Simplifying x + -1.583333334 = -2.739880371 Reorder the terms: -1.583333334 + x = -2.739880371 Solving -1.583333334 + x = -2.739880371 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 = -2.739880371 + 1.583333334 Combine like terms: -1.583333334 + 1.583333334 = 0.000000000 0.000000000 + x = -2.739880371 + 1.583333334 x = -2.739880371 + 1.583333334 Combine like terms: -2.739880371 + 1.583333334 = -1.156547037 x = -1.156547037 Simplifying x = -1.156547037

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.323213705, -1.156547037}

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