38x^2+13x-6=0

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Solution for 38x^2+13x-6=0 equation:


Simplifying
38x2 + 13x + -6 = 0

Reorder the terms:
-6 + 13x + 38x2 = 0

Solving
-6 + 13x + 38x2 = 0

Solving for variable 'x'.

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

Divide each side by '38'.
-0.1578947368 + 0.3421052632x + x2 = 0

Move the constant term to the right:

Add '0.1578947368' to each side of the equation.
-0.1578947368 + 0.3421052632x + 0.1578947368 + x2 = 0 + 0.1578947368

Reorder the terms:
-0.1578947368 + 0.1578947368 + 0.3421052632x + x2 = 0 + 0.1578947368

Combine like terms: -0.1578947368 + 0.1578947368 = 0.0000000000
0.0000000000 + 0.3421052632x + x2 = 0 + 0.1578947368
0.3421052632x + x2 = 0 + 0.1578947368

Combine like terms: 0 + 0.1578947368 = 0.1578947368
0.3421052632x + x2 = 0.1578947368

The x term is 0.3421052632x.  Take half its coefficient (0.1710526316).
Square it (0.02925900278) and add it to both sides.

Add '0.02925900278' to each side of the equation.
0.3421052632x + 0.02925900278 + x2 = 0.1578947368 + 0.02925900278

Reorder the terms:
0.02925900278 + 0.3421052632x + x2 = 0.1578947368 + 0.02925900278

Combine like terms: 0.1578947368 + 0.02925900278 = 0.18715373958
0.02925900278 + 0.3421052632x + x2 = 0.18715373958

Factor a perfect square on the left side:
(x + 0.1710526316)(x + 0.1710526316) = 0.18715373958

Calculate the square root of the right side: 0.43261269

Break this problem into two subproblems by setting 
(x + 0.1710526316) equal to 0.43261269 and -0.43261269.

Subproblem 1

x + 0.1710526316 = 0.43261269 Simplifying x + 0.1710526316 = 0.43261269 Reorder the terms: 0.1710526316 + x = 0.43261269 Solving 0.1710526316 + x = 0.43261269 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1710526316' to each side of the equation. 0.1710526316 + -0.1710526316 + x = 0.43261269 + -0.1710526316 Combine like terms: 0.1710526316 + -0.1710526316 = 0.0000000000 0.0000000000 + x = 0.43261269 + -0.1710526316 x = 0.43261269 + -0.1710526316 Combine like terms: 0.43261269 + -0.1710526316 = 0.2615600584 x = 0.2615600584 Simplifying x = 0.2615600584

Subproblem 2

x + 0.1710526316 = -0.43261269 Simplifying x + 0.1710526316 = -0.43261269 Reorder the terms: 0.1710526316 + x = -0.43261269 Solving 0.1710526316 + x = -0.43261269 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1710526316' to each side of the equation. 0.1710526316 + -0.1710526316 + x = -0.43261269 + -0.1710526316 Combine like terms: 0.1710526316 + -0.1710526316 = 0.0000000000 0.0000000000 + x = -0.43261269 + -0.1710526316 x = -0.43261269 + -0.1710526316 Combine like terms: -0.43261269 + -0.1710526316 = -0.6036653216 x = -0.6036653216 Simplifying x = -0.6036653216

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.2615600584, -0.6036653216}

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