6s(2s-11)=47

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Solution for 6s(2s-11)=47 equation:


Simplifying
6s(2s + -11) = 47

Reorder the terms:
6s(-11 + 2s) = 47
(-11 * 6s + 2s * 6s) = 47
(-66s + 12s2) = 47

Solving
-66s + 12s2 = 47

Solving for variable 's'.

Reorder the terms:
-47 + -66s + 12s2 = 47 + -47

Combine like terms: 47 + -47 = 0
-47 + -66s + 12s2 = 0

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

Divide each side by '12'.
-3.916666667 + -5.5s + s2 = 0

Move the constant term to the right:

Add '3.916666667' to each side of the equation.
-3.916666667 + -5.5s + 3.916666667 + s2 = 0 + 3.916666667

Reorder the terms:
-3.916666667 + 3.916666667 + -5.5s + s2 = 0 + 3.916666667

Combine like terms: -3.916666667 + 3.916666667 = 0.000000000
0.000000000 + -5.5s + s2 = 0 + 3.916666667
-5.5s + s2 = 0 + 3.916666667

Combine like terms: 0 + 3.916666667 = 3.916666667
-5.5s + s2 = 3.916666667

The s term is -5.5s.  Take half its coefficient (-2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
-5.5s + 7.5625 + s2 = 3.916666667 + 7.5625

Reorder the terms:
7.5625 + -5.5s + s2 = 3.916666667 + 7.5625

Combine like terms: 3.916666667 + 7.5625 = 11.479166667
7.5625 + -5.5s + s2 = 11.479166667

Factor a perfect square on the left side:
(s + -2.75)(s + -2.75) = 11.479166667

Calculate the square root of the right side: 3.388091892

Break this problem into two subproblems by setting 
(s + -2.75) equal to 3.388091892 and -3.388091892.

Subproblem 1

s + -2.75 = 3.388091892 Simplifying s + -2.75 = 3.388091892 Reorder the terms: -2.75 + s = 3.388091892 Solving -2.75 + s = 3.388091892 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + s = 3.388091892 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + s = 3.388091892 + 2.75 s = 3.388091892 + 2.75 Combine like terms: 3.388091892 + 2.75 = 6.138091892 s = 6.138091892 Simplifying s = 6.138091892

Subproblem 2

s + -2.75 = -3.388091892 Simplifying s + -2.75 = -3.388091892 Reorder the terms: -2.75 + s = -3.388091892 Solving -2.75 + s = -3.388091892 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + s = -3.388091892 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + s = -3.388091892 + 2.75 s = -3.388091892 + 2.75 Combine like terms: -3.388091892 + 2.75 = -0.638091892 s = -0.638091892 Simplifying s = -0.638091892

Solution

The solution to the problem is based on the solutions from the subproblems. s = {6.138091892, -0.638091892}

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