x^2+12x+24.6=0

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Solution for x^2+12x+24.6=0 equation:


Simplifying
x2 + 12x + 24.6 = 0

Reorder the terms:
24.6 + 12x + x2 = 0

Solving
24.6 + 12x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-24.6' to each side of the equation.
24.6 + 12x + -24.6 + x2 = 0 + -24.6

Reorder the terms:
24.6 + -24.6 + 12x + x2 = 0 + -24.6

Combine like terms: 24.6 + -24.6 = 0.0
0.0 + 12x + x2 = 0 + -24.6
12x + x2 = 0 + -24.6

Combine like terms: 0 + -24.6 = -24.6
12x + x2 = -24.6

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 = -24.6 + 36

Reorder the terms:
36 + 12x + x2 = -24.6 + 36

Combine like terms: -24.6 + 36 = 11.4
36 + 12x + x2 = 11.4

Factor a perfect square on the left side:
(x + 6)(x + 6) = 11.4

Calculate the square root of the right side: 3.376388603

Break this problem into two subproblems by setting 
(x + 6) equal to 3.376388603 and -3.376388603.

Subproblem 1

x + 6 = 3.376388603 Simplifying x + 6 = 3.376388603 Reorder the terms: 6 + x = 3.376388603 Solving 6 + x = 3.376388603 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 = 3.376388603 + -6 Combine like terms: 6 + -6 = 0 0 + x = 3.376388603 + -6 x = 3.376388603 + -6 Combine like terms: 3.376388603 + -6 = -2.623611397 x = -2.623611397 Simplifying x = -2.623611397

Subproblem 2

x + 6 = -3.376388603 Simplifying x + 6 = -3.376388603 Reorder the terms: 6 + x = -3.376388603 Solving 6 + x = -3.376388603 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 = -3.376388603 + -6 Combine like terms: 6 + -6 = 0 0 + x = -3.376388603 + -6 x = -3.376388603 + -6 Combine like terms: -3.376388603 + -6 = -9.376388603 x = -9.376388603 Simplifying x = -9.376388603

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-2.623611397, -9.376388603}

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