2s^2+17s+27=0

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Solution for 2s^2+17s+27=0 equation:


Simplifying
2s2 + 17s + 27 = 0

Reorder the terms:
27 + 17s + 2s2 = 0

Solving
27 + 17s + 2s2 = 0

Solving for variable 's'.

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

Divide each side by '2'.
13.5 + 8.5s + s2 = 0

Move the constant term to the right:

Add '-13.5' to each side of the equation.
13.5 + 8.5s + -13.5 + s2 = 0 + -13.5

Reorder the terms:
13.5 + -13.5 + 8.5s + s2 = 0 + -13.5

Combine like terms: 13.5 + -13.5 = 0.0
0.0 + 8.5s + s2 = 0 + -13.5
8.5s + s2 = 0 + -13.5

Combine like terms: 0 + -13.5 = -13.5
8.5s + s2 = -13.5

The s term is 8.5s.  Take half its coefficient (4.25).
Square it (18.0625) and add it to both sides.

Add '18.0625' to each side of the equation.
8.5s + 18.0625 + s2 = -13.5 + 18.0625

Reorder the terms:
18.0625 + 8.5s + s2 = -13.5 + 18.0625

Combine like terms: -13.5 + 18.0625 = 4.5625
18.0625 + 8.5s + s2 = 4.5625

Factor a perfect square on the left side:
(s + 4.25)(s + 4.25) = 4.5625

Calculate the square root of the right side: 2.136000936

Break this problem into two subproblems by setting 
(s + 4.25) equal to 2.136000936 and -2.136000936.

Subproblem 1

s + 4.25 = 2.136000936 Simplifying s + 4.25 = 2.136000936 Reorder the terms: 4.25 + s = 2.136000936 Solving 4.25 + s = 2.136000936 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-4.25' to each side of the equation. 4.25 + -4.25 + s = 2.136000936 + -4.25 Combine like terms: 4.25 + -4.25 = 0.00 0.00 + s = 2.136000936 + -4.25 s = 2.136000936 + -4.25 Combine like terms: 2.136000936 + -4.25 = -2.113999064 s = -2.113999064 Simplifying s = -2.113999064

Subproblem 2

s + 4.25 = -2.136000936 Simplifying s + 4.25 = -2.136000936 Reorder the terms: 4.25 + s = -2.136000936 Solving 4.25 + s = -2.136000936 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-4.25' to each side of the equation. 4.25 + -4.25 + s = -2.136000936 + -4.25 Combine like terms: 4.25 + -4.25 = 0.00 0.00 + s = -2.136000936 + -4.25 s = -2.136000936 + -4.25 Combine like terms: -2.136000936 + -4.25 = -6.386000936 s = -6.386000936 Simplifying s = -6.386000936

Solution

The solution to the problem is based on the solutions from the subproblems. s = {-2.113999064, -6.386000936}

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