15x^2+34x-6=0

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Solution for 15x^2+34x-6=0 equation:


Simplifying
15x2 + 34x + -6 = 0

Reorder the terms:
-6 + 34x + 15x2 = 0

Solving
-6 + 34x + 15x2 = 0

Solving for variable 'x'.

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

Divide each side by '15'.
-0.4 + 2.266666667x + x2 = 0

Move the constant term to the right:

Add '0.4' to each side of the equation.
-0.4 + 2.266666667x + 0.4 + x2 = 0 + 0.4

Reorder the terms:
-0.4 + 0.4 + 2.266666667x + x2 = 0 + 0.4

Combine like terms: -0.4 + 0.4 = 0.0
0.0 + 2.266666667x + x2 = 0 + 0.4
2.266666667x + x2 = 0 + 0.4

Combine like terms: 0 + 0.4 = 0.4
2.266666667x + x2 = 0.4

The x term is 2.266666667x.  Take half its coefficient (1.133333334).
Square it (1.284444446) and add it to both sides.

Add '1.284444446' to each side of the equation.
2.266666667x + 1.284444446 + x2 = 0.4 + 1.284444446

Reorder the terms:
1.284444446 + 2.266666667x + x2 = 0.4 + 1.284444446

Combine like terms: 0.4 + 1.284444446 = 1.684444446
1.284444446 + 2.266666667x + x2 = 1.684444446

Factor a perfect square on the left side:
(x + 1.133333334)(x + 1.133333334) = 1.684444446

Calculate the square root of the right side: 1.29786149

Break this problem into two subproblems by setting 
(x + 1.133333334) equal to 1.29786149 and -1.29786149.

Subproblem 1

x + 1.133333334 = 1.29786149 Simplifying x + 1.133333334 = 1.29786149 Reorder the terms: 1.133333334 + x = 1.29786149 Solving 1.133333334 + x = 1.29786149 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.133333334' to each side of the equation. 1.133333334 + -1.133333334 + x = 1.29786149 + -1.133333334 Combine like terms: 1.133333334 + -1.133333334 = 0.000000000 0.000000000 + x = 1.29786149 + -1.133333334 x = 1.29786149 + -1.133333334 Combine like terms: 1.29786149 + -1.133333334 = 0.164528156 x = 0.164528156 Simplifying x = 0.164528156

Subproblem 2

x + 1.133333334 = -1.29786149 Simplifying x + 1.133333334 = -1.29786149 Reorder the terms: 1.133333334 + x = -1.29786149 Solving 1.133333334 + x = -1.29786149 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.133333334' to each side of the equation. 1.133333334 + -1.133333334 + x = -1.29786149 + -1.133333334 Combine like terms: 1.133333334 + -1.133333334 = 0.000000000 0.000000000 + x = -1.29786149 + -1.133333334 x = -1.29786149 + -1.133333334 Combine like terms: -1.29786149 + -1.133333334 = -2.431194824 x = -2.431194824 Simplifying x = -2.431194824

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.164528156, -2.431194824}

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