13x^2+22x+5=0

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Solution for 13x^2+22x+5=0 equation:


Simplifying
13x2 + 22x + 5 = 0

Reorder the terms:
5 + 22x + 13x2 = 0

Solving
5 + 22x + 13x2 = 0

Solving for variable 'x'.

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

Divide each side by '13'.
0.3846153846 + 1.692307692x + x2 = 0

Move the constant term to the right:

Add '-0.3846153846' to each side of the equation.
0.3846153846 + 1.692307692x + -0.3846153846 + x2 = 0 + -0.3846153846

Reorder the terms:
0.3846153846 + -0.3846153846 + 1.692307692x + x2 = 0 + -0.3846153846

Combine like terms: 0.3846153846 + -0.3846153846 = 0.0000000000
0.0000000000 + 1.692307692x + x2 = 0 + -0.3846153846
1.692307692x + x2 = 0 + -0.3846153846

Combine like terms: 0 + -0.3846153846 = -0.3846153846
1.692307692x + x2 = -0.3846153846

The x term is 1.692307692x.  Take half its coefficient (0.846153846).
Square it (0.7159763311) and add it to both sides.

Add '0.7159763311' to each side of the equation.
1.692307692x + 0.7159763311 + x2 = -0.3846153846 + 0.7159763311

Reorder the terms:
0.7159763311 + 1.692307692x + x2 = -0.3846153846 + 0.7159763311

Combine like terms: -0.3846153846 + 0.7159763311 = 0.3313609465
0.7159763311 + 1.692307692x + x2 = 0.3313609465

Factor a perfect square on the left side:
(x + 0.846153846)(x + 0.846153846) = 0.3313609465

Calculate the square root of the right side: 0.575639598

Break this problem into two subproblems by setting 
(x + 0.846153846) equal to 0.575639598 and -0.575639598.

Subproblem 1

x + 0.846153846 = 0.575639598 Simplifying x + 0.846153846 = 0.575639598 Reorder the terms: 0.846153846 + x = 0.575639598 Solving 0.846153846 + x = 0.575639598 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.846153846' to each side of the equation. 0.846153846 + -0.846153846 + x = 0.575639598 + -0.846153846 Combine like terms: 0.846153846 + -0.846153846 = 0.000000000 0.000000000 + x = 0.575639598 + -0.846153846 x = 0.575639598 + -0.846153846 Combine like terms: 0.575639598 + -0.846153846 = -0.270514248 x = -0.270514248 Simplifying x = -0.270514248

Subproblem 2

x + 0.846153846 = -0.575639598 Simplifying x + 0.846153846 = -0.575639598 Reorder the terms: 0.846153846 + x = -0.575639598 Solving 0.846153846 + x = -0.575639598 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.846153846' to each side of the equation. 0.846153846 + -0.846153846 + x = -0.575639598 + -0.846153846 Combine like terms: 0.846153846 + -0.846153846 = 0.000000000 0.000000000 + x = -0.575639598 + -0.846153846 x = -0.575639598 + -0.846153846 Combine like terms: -0.575639598 + -0.846153846 = -1.421793444 x = -1.421793444 Simplifying x = -1.421793444

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.270514248, -1.421793444}

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