x^2+24x+9=0

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Solution for x^2+24x+9=0 equation:


Simplifying
x2 + 24x + 9 = 0

Reorder the terms:
9 + 24x + x2 = 0

Solving
9 + 24x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-9' to each side of the equation.
9 + 24x + -9 + x2 = 0 + -9

Reorder the terms:
9 + -9 + 24x + x2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 24x + x2 = 0 + -9
24x + x2 = 0 + -9

Combine like terms: 0 + -9 = -9
24x + x2 = -9

The x term is 24x.  Take half its coefficient (12).
Square it (144) and add it to both sides.

Add '144' to each side of the equation.
24x + 144 + x2 = -9 + 144

Reorder the terms:
144 + 24x + x2 = -9 + 144

Combine like terms: -9 + 144 = 135
144 + 24x + x2 = 135

Factor a perfect square on the left side:
(x + 12)(x + 12) = 135

Calculate the square root of the right side: 11.618950039

Break this problem into two subproblems by setting 
(x + 12) equal to 11.618950039 and -11.618950039.

Subproblem 1

x + 12 = 11.618950039 Simplifying x + 12 = 11.618950039 Reorder the terms: 12 + x = 11.618950039 Solving 12 + x = 11.618950039 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = 11.618950039 + -12 Combine like terms: 12 + -12 = 0 0 + x = 11.618950039 + -12 x = 11.618950039 + -12 Combine like terms: 11.618950039 + -12 = -0.381049961 x = -0.381049961 Simplifying x = -0.381049961

Subproblem 2

x + 12 = -11.618950039 Simplifying x + 12 = -11.618950039 Reorder the terms: 12 + x = -11.618950039 Solving 12 + x = -11.618950039 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = -11.618950039 + -12 Combine like terms: 12 + -12 = 0 0 + x = -11.618950039 + -12 x = -11.618950039 + -12 Combine like terms: -11.618950039 + -12 = -23.618950039 x = -23.618950039 Simplifying x = -23.618950039

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.381049961, -23.618950039}

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