5x^2+26x+22=0

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Solution for 5x^2+26x+22=0 equation:


Simplifying
5x2 + 26x + 22 = 0

Reorder the terms:
22 + 26x + 5x2 = 0

Solving
22 + 26x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
4.4 + 5.2x + x2 = 0

Move the constant term to the right:

Add '-4.4' to each side of the equation.
4.4 + 5.2x + -4.4 + x2 = 0 + -4.4

Reorder the terms:
4.4 + -4.4 + 5.2x + x2 = 0 + -4.4

Combine like terms: 4.4 + -4.4 = 0.0
0.0 + 5.2x + x2 = 0 + -4.4
5.2x + x2 = 0 + -4.4

Combine like terms: 0 + -4.4 = -4.4
5.2x + x2 = -4.4

The x term is 5.2x.  Take half its coefficient (2.6).
Square it (6.76) and add it to both sides.

Add '6.76' to each side of the equation.
5.2x + 6.76 + x2 = -4.4 + 6.76

Reorder the terms:
6.76 + 5.2x + x2 = -4.4 + 6.76

Combine like terms: -4.4 + 6.76 = 2.36
6.76 + 5.2x + x2 = 2.36

Factor a perfect square on the left side:
(x + 2.6)(x + 2.6) = 2.36

Calculate the square root of the right side: 1.53622915

Break this problem into two subproblems by setting 
(x + 2.6) equal to 1.53622915 and -1.53622915.

Subproblem 1

x + 2.6 = 1.53622915 Simplifying x + 2.6 = 1.53622915 Reorder the terms: 2.6 + x = 1.53622915 Solving 2.6 + x = 1.53622915 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.6' to each side of the equation. 2.6 + -2.6 + x = 1.53622915 + -2.6 Combine like terms: 2.6 + -2.6 = 0.0 0.0 + x = 1.53622915 + -2.6 x = 1.53622915 + -2.6 Combine like terms: 1.53622915 + -2.6 = -1.06377085 x = -1.06377085 Simplifying x = -1.06377085

Subproblem 2

x + 2.6 = -1.53622915 Simplifying x + 2.6 = -1.53622915 Reorder the terms: 2.6 + x = -1.53622915 Solving 2.6 + x = -1.53622915 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.6' to each side of the equation. 2.6 + -2.6 + x = -1.53622915 + -2.6 Combine like terms: 2.6 + -2.6 = 0.0 0.0 + x = -1.53622915 + -2.6 x = -1.53622915 + -2.6 Combine like terms: -1.53622915 + -2.6 = -4.13622915 x = -4.13622915 Simplifying x = -4.13622915

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.06377085, -4.13622915}

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