2x^2+38x+113=0

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Solution for 2x^2+38x+113=0 equation:


Simplifying
2x2 + 38x + 113 = 0

Reorder the terms:
113 + 38x + 2x2 = 0

Solving
113 + 38x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
56.5 + 19x + x2 = 0

Move the constant term to the right:

Add '-56.5' to each side of the equation.
56.5 + 19x + -56.5 + x2 = 0 + -56.5

Reorder the terms:
56.5 + -56.5 + 19x + x2 = 0 + -56.5

Combine like terms: 56.5 + -56.5 = 0.0
0.0 + 19x + x2 = 0 + -56.5
19x + x2 = 0 + -56.5

Combine like terms: 0 + -56.5 = -56.5
19x + x2 = -56.5

The x term is 19x.  Take half its coefficient (9.5).
Square it (90.25) and add it to both sides.

Add '90.25' to each side of the equation.
19x + 90.25 + x2 = -56.5 + 90.25

Reorder the terms:
90.25 + 19x + x2 = -56.5 + 90.25

Combine like terms: -56.5 + 90.25 = 33.75
90.25 + 19x + x2 = 33.75

Factor a perfect square on the left side:
(x + 9.5)(x + 9.5) = 33.75

Calculate the square root of the right side: 5.809475019

Break this problem into two subproblems by setting 
(x + 9.5) equal to 5.809475019 and -5.809475019.

Subproblem 1

x + 9.5 = 5.809475019 Simplifying x + 9.5 = 5.809475019 Reorder the terms: 9.5 + x = 5.809475019 Solving 9.5 + x = 5.809475019 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9.5' to each side of the equation. 9.5 + -9.5 + x = 5.809475019 + -9.5 Combine like terms: 9.5 + -9.5 = 0.0 0.0 + x = 5.809475019 + -9.5 x = 5.809475019 + -9.5 Combine like terms: 5.809475019 + -9.5 = -3.690524981 x = -3.690524981 Simplifying x = -3.690524981

Subproblem 2

x + 9.5 = -5.809475019 Simplifying x + 9.5 = -5.809475019 Reorder the terms: 9.5 + x = -5.809475019 Solving 9.5 + x = -5.809475019 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9.5' to each side of the equation. 9.5 + -9.5 + x = -5.809475019 + -9.5 Combine like terms: 9.5 + -9.5 = 0.0 0.0 + x = -5.809475019 + -9.5 x = -5.809475019 + -9.5 Combine like terms: -5.809475019 + -9.5 = -15.309475019 x = -15.309475019 Simplifying x = -15.309475019

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-3.690524981, -15.309475019}

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