2s^2-286s-1717=0

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Solution for 2s^2-286s-1717=0 equation:


Simplifying
2s2 + -286s + -1717 = 0

Reorder the terms:
-1717 + -286s + 2s2 = 0

Solving
-1717 + -286s + 2s2 = 0

Solving for variable 's'.

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

Divide each side by '2'.
-858.5 + -143s + s2 = 0

Move the constant term to the right:

Add '858.5' to each side of the equation.
-858.5 + -143s + 858.5 + s2 = 0 + 858.5

Reorder the terms:
-858.5 + 858.5 + -143s + s2 = 0 + 858.5

Combine like terms: -858.5 + 858.5 = 0.0
0.0 + -143s + s2 = 0 + 858.5
-143s + s2 = 0 + 858.5

Combine like terms: 0 + 858.5 = 858.5
-143s + s2 = 858.5

The s term is -143s.  Take half its coefficient (-71.5).
Square it (5112.25) and add it to both sides.

Add '5112.25' to each side of the equation.
-143s + 5112.25 + s2 = 858.5 + 5112.25

Reorder the terms:
5112.25 + -143s + s2 = 858.5 + 5112.25

Combine like terms: 858.5 + 5112.25 = 5970.75
5112.25 + -143s + s2 = 5970.75

Factor a perfect square on the left side:
(s + -71.5)(s + -71.5) = 5970.75

Calculate the square root of the right side: 77.270628314

Break this problem into two subproblems by setting 
(s + -71.5) equal to 77.270628314 and -77.270628314.

Subproblem 1

s + -71.5 = 77.270628314 Simplifying s + -71.5 = 77.270628314 Reorder the terms: -71.5 + s = 77.270628314 Solving -71.5 + s = 77.270628314 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '71.5' to each side of the equation. -71.5 + 71.5 + s = 77.270628314 + 71.5 Combine like terms: -71.5 + 71.5 = 0.0 0.0 + s = 77.270628314 + 71.5 s = 77.270628314 + 71.5 Combine like terms: 77.270628314 + 71.5 = 148.770628314 s = 148.770628314 Simplifying s = 148.770628314

Subproblem 2

s + -71.5 = -77.270628314 Simplifying s + -71.5 = -77.270628314 Reorder the terms: -71.5 + s = -77.270628314 Solving -71.5 + s = -77.270628314 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '71.5' to each side of the equation. -71.5 + 71.5 + s = -77.270628314 + 71.5 Combine like terms: -71.5 + 71.5 = 0.0 0.0 + s = -77.270628314 + 71.5 s = -77.270628314 + 71.5 Combine like terms: -77.270628314 + 71.5 = -5.770628314 s = -5.770628314 Simplifying s = -5.770628314

Solution

The solution to the problem is based on the solutions from the subproblems. s = {148.770628314, -5.770628314}

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