s^2+30s+11=0

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Solution for s^2+30s+11=0 equation:


Simplifying
s2 + 30s + 11 = 0

Reorder the terms:
11 + 30s + s2 = 0

Solving
11 + 30s + s2 = 0

Solving for variable 's'.

Begin completing the square.

Move the constant term to the right:

Add '-11' to each side of the equation.
11 + 30s + -11 + s2 = 0 + -11

Reorder the terms:
11 + -11 + 30s + s2 = 0 + -11

Combine like terms: 11 + -11 = 0
0 + 30s + s2 = 0 + -11
30s + s2 = 0 + -11

Combine like terms: 0 + -11 = -11
30s + s2 = -11

The s term is 30s.  Take half its coefficient (15).
Square it (225) and add it to both sides.

Add '225' to each side of the equation.
30s + 225 + s2 = -11 + 225

Reorder the terms:
225 + 30s + s2 = -11 + 225

Combine like terms: -11 + 225 = 214
225 + 30s + s2 = 214

Factor a perfect square on the left side:
(s + 15)(s + 15) = 214

Calculate the square root of the right side: 14.628738838

Break this problem into two subproblems by setting 
(s + 15) equal to 14.628738838 and -14.628738838.

Subproblem 1

s + 15 = 14.628738838 Simplifying s + 15 = 14.628738838 Reorder the terms: 15 + s = 14.628738838 Solving 15 + s = 14.628738838 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + s = 14.628738838 + -15 Combine like terms: 15 + -15 = 0 0 + s = 14.628738838 + -15 s = 14.628738838 + -15 Combine like terms: 14.628738838 + -15 = -0.371261162 s = -0.371261162 Simplifying s = -0.371261162

Subproblem 2

s + 15 = -14.628738838 Simplifying s + 15 = -14.628738838 Reorder the terms: 15 + s = -14.628738838 Solving 15 + s = -14.628738838 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + s = -14.628738838 + -15 Combine like terms: 15 + -15 = 0 0 + s = -14.628738838 + -15 s = -14.628738838 + -15 Combine like terms: -14.628738838 + -15 = -29.628738838 s = -29.628738838 Simplifying s = -29.628738838

Solution

The solution to the problem is based on the solutions from the subproblems. s = {-0.371261162, -29.628738838}

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