2x^2+24x+27=0

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Solution for 2x^2+24x+27=0 equation:


Simplifying
2x2 + 24x + 27 = 0

Reorder the terms:
27 + 24x + 2x2 = 0

Solving
27 + 24x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
13.5 + 12x + x2 = 0

Move the constant term to the right:

Add '-13.5' to each side of the equation.
13.5 + 12x + -13.5 + x2 = 0 + -13.5

Reorder the terms:
13.5 + -13.5 + 12x + x2 = 0 + -13.5

Combine like terms: 13.5 + -13.5 = 0.0
0.0 + 12x + x2 = 0 + -13.5
12x + x2 = 0 + -13.5

Combine like terms: 0 + -13.5 = -13.5
12x + x2 = -13.5

The x term is 12x.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12x + 36 + x2 = -13.5 + 36

Reorder the terms:
36 + 12x + x2 = -13.5 + 36

Combine like terms: -13.5 + 36 = 22.5
36 + 12x + x2 = 22.5

Factor a perfect square on the left side:
(x + 6)(x + 6) = 22.5

Calculate the square root of the right side: 4.74341649

Break this problem into two subproblems by setting 
(x + 6) equal to 4.74341649 and -4.74341649.

Subproblem 1

x + 6 = 4.74341649 Simplifying x + 6 = 4.74341649 Reorder the terms: 6 + x = 4.74341649 Solving 6 + x = 4.74341649 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 4.74341649 + -6 Combine like terms: 6 + -6 = 0 0 + x = 4.74341649 + -6 x = 4.74341649 + -6 Combine like terms: 4.74341649 + -6 = -1.25658351 x = -1.25658351 Simplifying x = -1.25658351

Subproblem 2

x + 6 = -4.74341649 Simplifying x + 6 = -4.74341649 Reorder the terms: 6 + x = -4.74341649 Solving 6 + x = -4.74341649 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -4.74341649 + -6 Combine like terms: 6 + -6 = 0 0 + x = -4.74341649 + -6 x = -4.74341649 + -6 Combine like terms: -4.74341649 + -6 = -10.74341649 x = -10.74341649 Simplifying x = -10.74341649

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.25658351, -10.74341649}

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