s^2+12s+30=0

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Solution for s^2+12s+30=0 equation:


Simplifying
s2 + 12s + 30 = 0

Reorder the terms:
30 + 12s + s2 = 0

Solving
30 + 12s + s2 = 0

Solving for variable 's'.

Begin completing the square.

Move the constant term to the right:

Add '-30' to each side of the equation.
30 + 12s + -30 + s2 = 0 + -30

Reorder the terms:
30 + -30 + 12s + s2 = 0 + -30

Combine like terms: 30 + -30 = 0
0 + 12s + s2 = 0 + -30
12s + s2 = 0 + -30

Combine like terms: 0 + -30 = -30
12s + s2 = -30

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

Add '36' to each side of the equation.
12s + 36 + s2 = -30 + 36

Reorder the terms:
36 + 12s + s2 = -30 + 36

Combine like terms: -30 + 36 = 6
36 + 12s + s2 = 6

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

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(s + 6) equal to 2.449489743 and -2.449489743.

Subproblem 1

s + 6 = 2.449489743 Simplifying s + 6 = 2.449489743 Reorder the terms: 6 + s = 2.449489743 Solving 6 + s = 2.449489743 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + s = 2.449489743 + -6 Combine like terms: 6 + -6 = 0 0 + s = 2.449489743 + -6 s = 2.449489743 + -6 Combine like terms: 2.449489743 + -6 = -3.550510257 s = -3.550510257 Simplifying s = -3.550510257

Subproblem 2

s + 6 = -2.449489743 Simplifying s + 6 = -2.449489743 Reorder the terms: 6 + s = -2.449489743 Solving 6 + s = -2.449489743 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + s = -2.449489743 + -6 Combine like terms: 6 + -6 = 0 0 + s = -2.449489743 + -6 s = -2.449489743 + -6 Combine like terms: -2.449489743 + -6 = -8.449489743 s = -8.449489743 Simplifying s = -8.449489743

Solution

The solution to the problem is based on the solutions from the subproblems. s = {-3.550510257, -8.449489743}

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