56s^2+23s-64=0

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Solution for 56s^2+23s-64=0 equation:


Simplifying
56s2 + 23s + -64 = 0

Reorder the terms:
-64 + 23s + 56s2 = 0

Solving
-64 + 23s + 56s2 = 0

Solving for variable 's'.

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

Divide each side by '56'.
-1.142857143 + 0.4107142857s + s2 = 0

Move the constant term to the right:

Add '1.142857143' to each side of the equation.
-1.142857143 + 0.4107142857s + 1.142857143 + s2 = 0 + 1.142857143

Reorder the terms:
-1.142857143 + 1.142857143 + 0.4107142857s + s2 = 0 + 1.142857143

Combine like terms: -1.142857143 + 1.142857143 = 0.000000000
0.000000000 + 0.4107142857s + s2 = 0 + 1.142857143
0.4107142857s + s2 = 0 + 1.142857143

Combine like terms: 0 + 1.142857143 = 1.142857143
0.4107142857s + s2 = 1.142857143

The s term is 0.4107142857s.  Take half its coefficient (0.2053571429).
Square it (0.04217155614) and add it to both sides.

Add '0.04217155614' to each side of the equation.
0.4107142857s + 0.04217155614 + s2 = 1.142857143 + 0.04217155614

Reorder the terms:
0.04217155614 + 0.4107142857s + s2 = 1.142857143 + 0.04217155614

Combine like terms: 1.142857143 + 0.04217155614 = 1.18502869914
0.04217155614 + 0.4107142857s + s2 = 1.18502869914

Factor a perfect square on the left side:
(s + 0.2053571429)(s + 0.2053571429) = 1.18502869914

Calculate the square root of the right side: 1.088590235

Break this problem into two subproblems by setting 
(s + 0.2053571429) equal to 1.088590235 and -1.088590235.

Subproblem 1

s + 0.2053571429 = 1.088590235 Simplifying s + 0.2053571429 = 1.088590235 Reorder the terms: 0.2053571429 + s = 1.088590235 Solving 0.2053571429 + s = 1.088590235 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-0.2053571429' to each side of the equation. 0.2053571429 + -0.2053571429 + s = 1.088590235 + -0.2053571429 Combine like terms: 0.2053571429 + -0.2053571429 = 0.0000000000 0.0000000000 + s = 1.088590235 + -0.2053571429 s = 1.088590235 + -0.2053571429 Combine like terms: 1.088590235 + -0.2053571429 = 0.8832330921 s = 0.8832330921 Simplifying s = 0.8832330921

Subproblem 2

s + 0.2053571429 = -1.088590235 Simplifying s + 0.2053571429 = -1.088590235 Reorder the terms: 0.2053571429 + s = -1.088590235 Solving 0.2053571429 + s = -1.088590235 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-0.2053571429' to each side of the equation. 0.2053571429 + -0.2053571429 + s = -1.088590235 + -0.2053571429 Combine like terms: 0.2053571429 + -0.2053571429 = 0.0000000000 0.0000000000 + s = -1.088590235 + -0.2053571429 s = -1.088590235 + -0.2053571429 Combine like terms: -1.088590235 + -0.2053571429 = -1.2939473779 s = -1.2939473779 Simplifying s = -1.2939473779

Solution

The solution to the problem is based on the solutions from the subproblems. s = {0.8832330921, -1.2939473779}

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