5x^2+36x+10=0

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Solution for 5x^2+36x+10=0 equation:


Simplifying
5x2 + 36x + 10 = 0

Reorder the terms:
10 + 36x + 5x2 = 0

Solving
10 + 36x + 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'.
2 + 7.2x + x2 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + 7.2x + -2 + x2 = 0 + -2

Reorder the terms:
2 + -2 + 7.2x + x2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 7.2x + x2 = 0 + -2
7.2x + x2 = 0 + -2

Combine like terms: 0 + -2 = -2
7.2x + x2 = -2

The x term is 7.2x.  Take half its coefficient (3.6).
Square it (12.96) and add it to both sides.

Add '12.96' to each side of the equation.
7.2x + 12.96 + x2 = -2 + 12.96

Reorder the terms:
12.96 + 7.2x + x2 = -2 + 12.96

Combine like terms: -2 + 12.96 = 10.96
12.96 + 7.2x + x2 = 10.96

Factor a perfect square on the left side:
(x + 3.6)(x + 3.6) = 10.96

Calculate the square root of the right side: 3.310589071

Break this problem into two subproblems by setting 
(x + 3.6) equal to 3.310589071 and -3.310589071.

Subproblem 1

x + 3.6 = 3.310589071 Simplifying x + 3.6 = 3.310589071 Reorder the terms: 3.6 + x = 3.310589071 Solving 3.6 + x = 3.310589071 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.6' to each side of the equation. 3.6 + -3.6 + x = 3.310589071 + -3.6 Combine like terms: 3.6 + -3.6 = 0.0 0.0 + x = 3.310589071 + -3.6 x = 3.310589071 + -3.6 Combine like terms: 3.310589071 + -3.6 = -0.289410929 x = -0.289410929 Simplifying x = -0.289410929

Subproblem 2

x + 3.6 = -3.310589071 Simplifying x + 3.6 = -3.310589071 Reorder the terms: 3.6 + x = -3.310589071 Solving 3.6 + x = -3.310589071 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.6' to each side of the equation. 3.6 + -3.6 + x = -3.310589071 + -3.6 Combine like terms: 3.6 + -3.6 = 0.0 0.0 + x = -3.310589071 + -3.6 x = -3.310589071 + -3.6 Combine like terms: -3.310589071 + -3.6 = -6.910589071 x = -6.910589071 Simplifying x = -6.910589071

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.289410929, -6.910589071}

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