5x^2+26x+6=0

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Solution for 5x^2+26x+6=0 equation:


Simplifying
5x2 + 26x + 6 = 0

Reorder the terms:
6 + 26x + 5x2 = 0

Solving
6 + 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'.
1.2 + 5.2x + x2 = 0

Move the constant term to the right:

Add '-1.2' to each side of the equation.
1.2 + 5.2x + -1.2 + x2 = 0 + -1.2

Reorder the terms:
1.2 + -1.2 + 5.2x + x2 = 0 + -1.2

Combine like terms: 1.2 + -1.2 = 0.0
0.0 + 5.2x + x2 = 0 + -1.2
5.2x + x2 = 0 + -1.2

Combine like terms: 0 + -1.2 = -1.2
5.2x + x2 = -1.2

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 = -1.2 + 6.76

Reorder the terms:
6.76 + 5.2x + x2 = -1.2 + 6.76

Combine like terms: -1.2 + 6.76 = 5.56
6.76 + 5.2x + x2 = 5.56

Factor a perfect square on the left side:
(x + 2.6)(x + 2.6) = 5.56

Calculate the square root of the right side: 2.357965225

Break this problem into two subproblems by setting 
(x + 2.6) equal to 2.357965225 and -2.357965225.

Subproblem 1

x + 2.6 = 2.357965225 Simplifying x + 2.6 = 2.357965225 Reorder the terms: 2.6 + x = 2.357965225 Solving 2.6 + x = 2.357965225 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 = 2.357965225 + -2.6 Combine like terms: 2.6 + -2.6 = 0.0 0.0 + x = 2.357965225 + -2.6 x = 2.357965225 + -2.6 Combine like terms: 2.357965225 + -2.6 = -0.242034775 x = -0.242034775 Simplifying x = -0.242034775

Subproblem 2

x + 2.6 = -2.357965225 Simplifying x + 2.6 = -2.357965225 Reorder the terms: 2.6 + x = -2.357965225 Solving 2.6 + x = -2.357965225 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 = -2.357965225 + -2.6 Combine like terms: 2.6 + -2.6 = 0.0 0.0 + x = -2.357965225 + -2.6 x = -2.357965225 + -2.6 Combine like terms: -2.357965225 + -2.6 = -4.957965225 x = -4.957965225 Simplifying x = -4.957965225

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.242034775, -4.957965225}

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