20=0.0052s^2+0.13s

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Solution for 20=0.0052s^2+0.13s equation:


Simplifying
20 = 0.0052s2 + 0.13s

Reorder the terms:
20 = 0.13s + 0.0052s2

Solving
20 = 0.13s + 0.0052s2

Solving for variable 's'.

Reorder the terms:
20 + -0.13s + -0.0052s2 = 0.13s + -0.13s + 0.0052s2 + -0.0052s2

Combine like terms: 0.13s + -0.13s = 0.00
20 + -0.13s + -0.0052s2 = 0.00 + 0.0052s2 + -0.0052s2
20 + -0.13s + -0.0052s2 = 0.0052s2 + -0.0052s2

Combine like terms: 0.0052s2 + -0.0052s2 = 0.0000
20 + -0.13s + -0.0052s2 = 0.0000

Begin completing the square.  Divide all terms by
-0.0052 the coefficient of the squared term: 

Divide each side by '-0.0052'.
-3846.153846 + 25s + s2 = 0

Move the constant term to the right:

Add '3846.153846' to each side of the equation.
-3846.153846 + 25s + 3846.153846 + s2 = 0 + 3846.153846

Reorder the terms:
-3846.153846 + 3846.153846 + 25s + s2 = 0 + 3846.153846

Combine like terms: -3846.153846 + 3846.153846 = 0.000000
0.000000 + 25s + s2 = 0 + 3846.153846
25s + s2 = 0 + 3846.153846

Combine like terms: 0 + 3846.153846 = 3846.153846
25s + s2 = 3846.153846

The s term is 25s.  Take half its coefficient (12.5).
Square it (156.25) and add it to both sides.

Add '156.25' to each side of the equation.
25s + 156.25 + s2 = 3846.153846 + 156.25

Reorder the terms:
156.25 + 25s + s2 = 3846.153846 + 156.25

Combine like terms: 3846.153846 + 156.25 = 4002.403846
156.25 + 25s + s2 = 4002.403846

Factor a perfect square on the left side:
(s + 12.5)(s + 12.5) = 4002.403846

Calculate the square root of the right side: 63.26455442

Break this problem into two subproblems by setting 
(s + 12.5) equal to 63.26455442 and -63.26455442.

Subproblem 1

s + 12.5 = 63.26455442 Simplifying s + 12.5 = 63.26455442 Reorder the terms: 12.5 + s = 63.26455442 Solving 12.5 + s = 63.26455442 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-12.5' to each side of the equation. 12.5 + -12.5 + s = 63.26455442 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + s = 63.26455442 + -12.5 s = 63.26455442 + -12.5 Combine like terms: 63.26455442 + -12.5 = 50.76455442 s = 50.76455442 Simplifying s = 50.76455442

Subproblem 2

s + 12.5 = -63.26455442 Simplifying s + 12.5 = -63.26455442 Reorder the terms: 12.5 + s = -63.26455442 Solving 12.5 + s = -63.26455442 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-12.5' to each side of the equation. 12.5 + -12.5 + s = -63.26455442 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + s = -63.26455442 + -12.5 s = -63.26455442 + -12.5 Combine like terms: -63.26455442 + -12.5 = -75.76455442 s = -75.76455442 Simplifying s = -75.76455442

Solution

The solution to the problem is based on the solutions from the subproblems. s = {50.76455442, -75.76455442}

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