11x^2+44x+13=0

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Solution for 11x^2+44x+13=0 equation:


Simplifying
11x2 + 44x + 13 = 0

Reorder the terms:
13 + 44x + 11x2 = 0

Solving
13 + 44x + 11x2 = 0

Solving for variable 'x'.

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

Divide each side by '11'.
1.181818182 + 4x + x2 = 0

Move the constant term to the right:

Add '-1.181818182' to each side of the equation.
1.181818182 + 4x + -1.181818182 + x2 = 0 + -1.181818182

Reorder the terms:
1.181818182 + -1.181818182 + 4x + x2 = 0 + -1.181818182

Combine like terms: 1.181818182 + -1.181818182 = 0.000000000
0.000000000 + 4x + x2 = 0 + -1.181818182
4x + x2 = 0 + -1.181818182

Combine like terms: 0 + -1.181818182 = -1.181818182
4x + x2 = -1.181818182

The x term is 4x.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4x + 4 + x2 = -1.181818182 + 4

Reorder the terms:
4 + 4x + x2 = -1.181818182 + 4

Combine like terms: -1.181818182 + 4 = 2.818181818
4 + 4x + x2 = 2.818181818

Factor a perfect square on the left side:
(x + 2)(x + 2) = 2.818181818

Calculate the square root of the right side: 1.678744119

Break this problem into two subproblems by setting 
(x + 2) equal to 1.678744119 and -1.678744119.

Subproblem 1

x + 2 = 1.678744119 Simplifying x + 2 = 1.678744119 Reorder the terms: 2 + x = 1.678744119 Solving 2 + x = 1.678744119 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 1.678744119 + -2 Combine like terms: 2 + -2 = 0 0 + x = 1.678744119 + -2 x = 1.678744119 + -2 Combine like terms: 1.678744119 + -2 = -0.321255881 x = -0.321255881 Simplifying x = -0.321255881

Subproblem 2

x + 2 = -1.678744119 Simplifying x + 2 = -1.678744119 Reorder the terms: 2 + x = -1.678744119 Solving 2 + x = -1.678744119 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -1.678744119 + -2 Combine like terms: 2 + -2 = 0 0 + x = -1.678744119 + -2 x = -1.678744119 + -2 Combine like terms: -1.678744119 + -2 = -3.678744119 x = -3.678744119 Simplifying x = -3.678744119

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.321255881, -3.678744119}

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