6s^2-13s-10=0

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Solution for 6s^2-13s-10=0 equation:


Simplifying
6s2 + -13s + -10 = 0

Reorder the terms:
-10 + -13s + 6s2 = 0

Solving
-10 + -13s + 6s2 = 0

Solving for variable 's'.

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

Divide each side by '6'.
-1.666666667 + -2.166666667s + s2 = 0

Move the constant term to the right:

Add '1.666666667' to each side of the equation.
-1.666666667 + -2.166666667s + 1.666666667 + s2 = 0 + 1.666666667

Reorder the terms:
-1.666666667 + 1.666666667 + -2.166666667s + s2 = 0 + 1.666666667

Combine like terms: -1.666666667 + 1.666666667 = 0.000000000
0.000000000 + -2.166666667s + s2 = 0 + 1.666666667
-2.166666667s + s2 = 0 + 1.666666667

Combine like terms: 0 + 1.666666667 = 1.666666667
-2.166666667s + s2 = 1.666666667

The s term is -2.166666667s.  Take half its coefficient (-1.083333334).
Square it (1.173611113) and add it to both sides.

Add '1.173611113' to each side of the equation.
-2.166666667s + 1.173611113 + s2 = 1.666666667 + 1.173611113

Reorder the terms:
1.173611113 + -2.166666667s + s2 = 1.666666667 + 1.173611113

Combine like terms: 1.666666667 + 1.173611113 = 2.84027778
1.173611113 + -2.166666667s + s2 = 2.84027778

Factor a perfect square on the left side:
(s + -1.083333334)(s + -1.083333334) = 2.84027778

Calculate the square root of the right side: 1.685312369

Break this problem into two subproblems by setting 
(s + -1.083333334) equal to 1.685312369 and -1.685312369.

Subproblem 1

s + -1.083333334 = 1.685312369 Simplifying s + -1.083333334 = 1.685312369 Reorder the terms: -1.083333334 + s = 1.685312369 Solving -1.083333334 + s = 1.685312369 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '1.083333334' to each side of the equation. -1.083333334 + 1.083333334 + s = 1.685312369 + 1.083333334 Combine like terms: -1.083333334 + 1.083333334 = 0.000000000 0.000000000 + s = 1.685312369 + 1.083333334 s = 1.685312369 + 1.083333334 Combine like terms: 1.685312369 + 1.083333334 = 2.768645703 s = 2.768645703 Simplifying s = 2.768645703

Subproblem 2

s + -1.083333334 = -1.685312369 Simplifying s + -1.083333334 = -1.685312369 Reorder the terms: -1.083333334 + s = -1.685312369 Solving -1.083333334 + s = -1.685312369 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '1.083333334' to each side of the equation. -1.083333334 + 1.083333334 + s = -1.685312369 + 1.083333334 Combine like terms: -1.083333334 + 1.083333334 = 0.000000000 0.000000000 + s = -1.685312369 + 1.083333334 s = -1.685312369 + 1.083333334 Combine like terms: -1.685312369 + 1.083333334 = -0.601979035 s = -0.601979035 Simplifying s = -0.601979035

Solution

The solution to the problem is based on the solutions from the subproblems. s = {2.768645703, -0.601979035}

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