2x^2+20x+37=0

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Solution for 2x^2+20x+37=0 equation:


Simplifying
2x2 + 20x + 37 = 0

Reorder the terms:
37 + 20x + 2x2 = 0

Solving
37 + 20x + 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'.
18.5 + 10x + x2 = 0

Move the constant term to the right:

Add '-18.5' to each side of the equation.
18.5 + 10x + -18.5 + x2 = 0 + -18.5

Reorder the terms:
18.5 + -18.5 + 10x + x2 = 0 + -18.5

Combine like terms: 18.5 + -18.5 = 0.0
0.0 + 10x + x2 = 0 + -18.5
10x + x2 = 0 + -18.5

Combine like terms: 0 + -18.5 = -18.5
10x + x2 = -18.5

The x term is 10x.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10x + 25 + x2 = -18.5 + 25

Reorder the terms:
25 + 10x + x2 = -18.5 + 25

Combine like terms: -18.5 + 25 = 6.5
25 + 10x + x2 = 6.5

Factor a perfect square on the left side:
(x + 5)(x + 5) = 6.5

Calculate the square root of the right side: 2.549509757

Break this problem into two subproblems by setting 
(x + 5) equal to 2.549509757 and -2.549509757.

Subproblem 1

x + 5 = 2.549509757 Simplifying x + 5 = 2.549509757 Reorder the terms: 5 + x = 2.549509757 Solving 5 + x = 2.549509757 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 2.549509757 + -5 Combine like terms: 5 + -5 = 0 0 + x = 2.549509757 + -5 x = 2.549509757 + -5 Combine like terms: 2.549509757 + -5 = -2.450490243 x = -2.450490243 Simplifying x = -2.450490243

Subproblem 2

x + 5 = -2.549509757 Simplifying x + 5 = -2.549509757 Reorder the terms: 5 + x = -2.549509757 Solving 5 + x = -2.549509757 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -2.549509757 + -5 Combine like terms: 5 + -5 = 0 0 + x = -2.549509757 + -5 x = -2.549509757 + -5 Combine like terms: -2.549509757 + -5 = -7.549509757 x = -7.549509757 Simplifying x = -7.549509757

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-2.450490243, -7.549509757}

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