2s^2+20s+33=0

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Solution for 2s^2+20s+33=0 equation:


Simplifying
2s2 + 20s + 33 = 0

Reorder the terms:
33 + 20s + 2s2 = 0

Solving
33 + 20s + 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'.
16.5 + 10s + s2 = 0

Move the constant term to the right:

Add '-16.5' to each side of the equation.
16.5 + 10s + -16.5 + s2 = 0 + -16.5

Reorder the terms:
16.5 + -16.5 + 10s + s2 = 0 + -16.5

Combine like terms: 16.5 + -16.5 = 0.0
0.0 + 10s + s2 = 0 + -16.5
10s + s2 = 0 + -16.5

Combine like terms: 0 + -16.5 = -16.5
10s + s2 = -16.5

The s term is 10s.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10s + 25 + s2 = -16.5 + 25

Reorder the terms:
25 + 10s + s2 = -16.5 + 25

Combine like terms: -16.5 + 25 = 8.5
25 + 10s + s2 = 8.5

Factor a perfect square on the left side:
(s + 5)(s + 5) = 8.5

Calculate the square root of the right side: 2.915475947

Break this problem into two subproblems by setting 
(s + 5) equal to 2.915475947 and -2.915475947.

Subproblem 1

s + 5 = 2.915475947 Simplifying s + 5 = 2.915475947 Reorder the terms: 5 + s = 2.915475947 Solving 5 + s = 2.915475947 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + s = 2.915475947 + -5 Combine like terms: 5 + -5 = 0 0 + s = 2.915475947 + -5 s = 2.915475947 + -5 Combine like terms: 2.915475947 + -5 = -2.084524053 s = -2.084524053 Simplifying s = -2.084524053

Subproblem 2

s + 5 = -2.915475947 Simplifying s + 5 = -2.915475947 Reorder the terms: 5 + s = -2.915475947 Solving 5 + s = -2.915475947 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + s = -2.915475947 + -5 Combine like terms: 5 + -5 = 0 0 + s = -2.915475947 + -5 s = -2.915475947 + -5 Combine like terms: -2.915475947 + -5 = -7.915475947 s = -7.915475947 Simplifying s = -7.915475947

Solution

The solution to the problem is based on the solutions from the subproblems. s = {-2.084524053, -7.915475947}

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