5x^2+36x+24=0

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Solution for 5x^2+36x+24=0 equation:


Simplifying
5x2 + 36x + 24 = 0

Reorder the terms:
24 + 36x + 5x2 = 0

Solving
24 + 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'.
4.8 + 7.2x + x2 = 0

Move the constant term to the right:

Add '-4.8' to each side of the equation.
4.8 + 7.2x + -4.8 + x2 = 0 + -4.8

Reorder the terms:
4.8 + -4.8 + 7.2x + x2 = 0 + -4.8

Combine like terms: 4.8 + -4.8 = 0.0
0.0 + 7.2x + x2 = 0 + -4.8
7.2x + x2 = 0 + -4.8

Combine like terms: 0 + -4.8 = -4.8
7.2x + x2 = -4.8

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 = -4.8 + 12.96

Reorder the terms:
12.96 + 7.2x + x2 = -4.8 + 12.96

Combine like terms: -4.8 + 12.96 = 8.16
12.96 + 7.2x + x2 = 8.16

Factor a perfect square on the left side:
(x + 3.6)(x + 3.6) = 8.16

Calculate the square root of the right side: 2.856571371

Break this problem into two subproblems by setting 
(x + 3.6) equal to 2.856571371 and -2.856571371.

Subproblem 1

x + 3.6 = 2.856571371 Simplifying x + 3.6 = 2.856571371 Reorder the terms: 3.6 + x = 2.856571371 Solving 3.6 + x = 2.856571371 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 = 2.856571371 + -3.6 Combine like terms: 3.6 + -3.6 = 0.0 0.0 + x = 2.856571371 + -3.6 x = 2.856571371 + -3.6 Combine like terms: 2.856571371 + -3.6 = -0.743428629 x = -0.743428629 Simplifying x = -0.743428629

Subproblem 2

x + 3.6 = -2.856571371 Simplifying x + 3.6 = -2.856571371 Reorder the terms: 3.6 + x = -2.856571371 Solving 3.6 + x = -2.856571371 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 = -2.856571371 + -3.6 Combine like terms: 3.6 + -3.6 = 0.0 0.0 + x = -2.856571371 + -3.6 x = -2.856571371 + -3.6 Combine like terms: -2.856571371 + -3.6 = -6.456571371 x = -6.456571371 Simplifying x = -6.456571371

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.743428629, -6.456571371}

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