12s^2-28s+5=

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Solution for 12s^2-28s+5= equation:


Simplifying
12s2 + -28s + 5 = 0

Reorder the terms:
5 + -28s + 12s2 = 0

Solving
5 + -28s + 12s2 = 0

Solving for variable 's'.

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

Divide each side by '12'.
0.4166666667 + -2.333333333s + s2 = 0

Move the constant term to the right:

Add '-0.4166666667' to each side of the equation.
0.4166666667 + -2.333333333s + -0.4166666667 + s2 = 0 + -0.4166666667

Reorder the terms:
0.4166666667 + -0.4166666667 + -2.333333333s + s2 = 0 + -0.4166666667

Combine like terms: 0.4166666667 + -0.4166666667 = 0.0000000000
0.0000000000 + -2.333333333s + s2 = 0 + -0.4166666667
-2.333333333s + s2 = 0 + -0.4166666667

Combine like terms: 0 + -0.4166666667 = -0.4166666667
-2.333333333s + s2 = -0.4166666667

The s term is -2.333333333s.  Take half its coefficient (-1.166666667).
Square it (1.361111112) and add it to both sides.

Add '1.361111112' to each side of the equation.
-2.333333333s + 1.361111112 + s2 = -0.4166666667 + 1.361111112

Reorder the terms:
1.361111112 + -2.333333333s + s2 = -0.4166666667 + 1.361111112

Combine like terms: -0.4166666667 + 1.361111112 = 0.9444444453
1.361111112 + -2.333333333s + s2 = 0.9444444453

Factor a perfect square on the left side:
(s + -1.166666667)(s + -1.166666667) = 0.9444444453

Calculate the square root of the right side: 0.971825316

Break this problem into two subproblems by setting 
(s + -1.166666667) equal to 0.971825316 and -0.971825316.

Subproblem 1

s + -1.166666667 = 0.971825316 Simplifying s + -1.166666667 = 0.971825316 Reorder the terms: -1.166666667 + s = 0.971825316 Solving -1.166666667 + s = 0.971825316 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '1.166666667' to each side of the equation. -1.166666667 + 1.166666667 + s = 0.971825316 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + s = 0.971825316 + 1.166666667 s = 0.971825316 + 1.166666667 Combine like terms: 0.971825316 + 1.166666667 = 2.138491983 s = 2.138491983 Simplifying s = 2.138491983

Subproblem 2

s + -1.166666667 = -0.971825316 Simplifying s + -1.166666667 = -0.971825316 Reorder the terms: -1.166666667 + s = -0.971825316 Solving -1.166666667 + s = -0.971825316 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '1.166666667' to each side of the equation. -1.166666667 + 1.166666667 + s = -0.971825316 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + s = -0.971825316 + 1.166666667 s = -0.971825316 + 1.166666667 Combine like terms: -0.971825316 + 1.166666667 = 0.194841351 s = 0.194841351 Simplifying s = 0.194841351

Solution

The solution to the problem is based on the solutions from the subproblems. s = {2.138491983, 0.194841351}

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