(7s^2+6s-3)-(-6s-1)=

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Solution for (7s^2+6s-3)-(-6s-1)= equation:


Simplifying
(7s2 + 6s + -3) + -1(-6s + -1) = 0

Reorder the terms:
(-3 + 6s + 7s2) + -1(-6s + -1) = 0

Remove parenthesis around (-3 + 6s + 7s2)
-3 + 6s + 7s2 + -1(-6s + -1) = 0

Reorder the terms:
-3 + 6s + 7s2 + -1(-1 + -6s) = 0
-3 + 6s + 7s2 + (-1 * -1 + -6s * -1) = 0
-3 + 6s + 7s2 + (1 + 6s) = 0

Reorder the terms:
-3 + 1 + 6s + 6s + 7s2 = 0

Combine like terms: -3 + 1 = -2
-2 + 6s + 6s + 7s2 = 0

Combine like terms: 6s + 6s = 12s
-2 + 12s + 7s2 = 0

Solving
-2 + 12s + 7s2 = 0

Solving for variable 's'.

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

Divide each side by '7'.
-0.2857142857 + 1.714285714s + s2 = 0

Move the constant term to the right:

Add '0.2857142857' to each side of the equation.
-0.2857142857 + 1.714285714s + 0.2857142857 + s2 = 0 + 0.2857142857

Reorder the terms:
-0.2857142857 + 0.2857142857 + 1.714285714s + s2 = 0 + 0.2857142857

Combine like terms: -0.2857142857 + 0.2857142857 = 0.0000000000
0.0000000000 + 1.714285714s + s2 = 0 + 0.2857142857
1.714285714s + s2 = 0 + 0.2857142857

Combine like terms: 0 + 0.2857142857 = 0.2857142857
1.714285714s + s2 = 0.2857142857

The s term is 1.714285714s.  Take half its coefficient (0.857142857).
Square it (0.7346938773) and add it to both sides.

Add '0.7346938773' to each side of the equation.
1.714285714s + 0.7346938773 + s2 = 0.2857142857 + 0.7346938773

Reorder the terms:
0.7346938773 + 1.714285714s + s2 = 0.2857142857 + 0.7346938773

Combine like terms: 0.2857142857 + 0.7346938773 = 1.020408163
0.7346938773 + 1.714285714s + s2 = 1.020408163

Factor a perfect square on the left side:
(s + 0.857142857)(s + 0.857142857) = 1.020408163

Calculate the square root of the right side: 1.010152544

Break this problem into two subproblems by setting 
(s + 0.857142857) equal to 1.010152544 and -1.010152544.

Subproblem 1

s + 0.857142857 = 1.010152544 Simplifying s + 0.857142857 = 1.010152544 Reorder the terms: 0.857142857 + s = 1.010152544 Solving 0.857142857 + s = 1.010152544 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-0.857142857' to each side of the equation. 0.857142857 + -0.857142857 + s = 1.010152544 + -0.857142857 Combine like terms: 0.857142857 + -0.857142857 = 0.000000000 0.000000000 + s = 1.010152544 + -0.857142857 s = 1.010152544 + -0.857142857 Combine like terms: 1.010152544 + -0.857142857 = 0.153009687 s = 0.153009687 Simplifying s = 0.153009687

Subproblem 2

s + 0.857142857 = -1.010152544 Simplifying s + 0.857142857 = -1.010152544 Reorder the terms: 0.857142857 + s = -1.010152544 Solving 0.857142857 + s = -1.010152544 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-0.857142857' to each side of the equation. 0.857142857 + -0.857142857 + s = -1.010152544 + -0.857142857 Combine like terms: 0.857142857 + -0.857142857 = 0.000000000 0.000000000 + s = -1.010152544 + -0.857142857 s = -1.010152544 + -0.857142857 Combine like terms: -1.010152544 + -0.857142857 = -1.867295401 s = -1.867295401 Simplifying s = -1.867295401

Solution

The solution to the problem is based on the solutions from the subproblems. s = {0.153009687, -1.867295401}

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