2(4s-16)5s=-5.2

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Solution for 2(4s-16)5s=-5.2 equation:


Simplifying
2(4s + -16) * 5s = -5.2

Reorder the terms:
2(-16 + 4s) * 5s = -5.2

Reorder the terms for easier multiplication:
2 * 5s(-16 + 4s) = -5.2

Multiply 2 * 5
10s(-16 + 4s) = -5.2
(-16 * 10s + 4s * 10s) = -5.2
(-160s + 40s2) = -5.2

Solving
-160s + 40s2 = -5.2

Solving for variable 's'.

Reorder the terms:
5.2 + -160s + 40s2 = -5.2 + 5.2

Combine like terms: -5.2 + 5.2 = 0.0
5.2 + -160s + 40s2 = 0.0

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

Divide each side by '40'.
0.13 + -4s + s2 = 0.00

Move the constant term to the right:

Add '-0.13' to each side of the equation.
0.13 + -4s + -0.13 + s2 = 0.00 + -0.13

Reorder the terms:
0.13 + -0.13 + -4s + s2 = 0.00 + -0.13

Combine like terms: 0.13 + -0.13 = 0.00
0.00 + -4s + s2 = 0.00 + -0.13
-4s + s2 = 0.00 + -0.13

Combine like terms: 0.00 + -0.13 = -0.13
-4s + s2 = -0.13

The s term is -4s.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4s + 4 + s2 = -0.13 + 4

Reorder the terms:
4 + -4s + s2 = -0.13 + 4

Combine like terms: -0.13 + 4 = 3.87
4 + -4s + s2 = 3.87

Factor a perfect square on the left side:
(s + -2)(s + -2) = 3.87

Calculate the square root of the right side: 1.967231557

Break this problem into two subproblems by setting 
(s + -2) equal to 1.967231557 and -1.967231557.

Subproblem 1

s + -2 = 1.967231557 Simplifying s + -2 = 1.967231557 Reorder the terms: -2 + s = 1.967231557 Solving -2 + s = 1.967231557 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + s = 1.967231557 + 2 Combine like terms: -2 + 2 = 0 0 + s = 1.967231557 + 2 s = 1.967231557 + 2 Combine like terms: 1.967231557 + 2 = 3.967231557 s = 3.967231557 Simplifying s = 3.967231557

Subproblem 2

s + -2 = -1.967231557 Simplifying s + -2 = -1.967231557 Reorder the terms: -2 + s = -1.967231557 Solving -2 + s = -1.967231557 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + s = -1.967231557 + 2 Combine like terms: -2 + 2 = 0 0 + s = -1.967231557 + 2 s = -1.967231557 + 2 Combine like terms: -1.967231557 + 2 = 0.032768443 s = 0.032768443 Simplifying s = 0.032768443

Solution

The solution to the problem is based on the solutions from the subproblems. s = {3.967231557, 0.032768443}

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