s^2-3s-178=0

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Solution for s^2-3s-178=0 equation:


Simplifying
s2 + -3s + -178 = 0

Reorder the terms:
-178 + -3s + s2 = 0

Solving
-178 + -3s + s2 = 0

Solving for variable 's'.

Begin completing the square.

Move the constant term to the right:

Add '178' to each side of the equation.
-178 + -3s + 178 + s2 = 0 + 178

Reorder the terms:
-178 + 178 + -3s + s2 = 0 + 178

Combine like terms: -178 + 178 = 0
0 + -3s + s2 = 0 + 178
-3s + s2 = 0 + 178

Combine like terms: 0 + 178 = 178
-3s + s2 = 178

The s term is -3s.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3s + 2.25 + s2 = 178 + 2.25

Reorder the terms:
2.25 + -3s + s2 = 178 + 2.25

Combine like terms: 178 + 2.25 = 180.25
2.25 + -3s + s2 = 180.25

Factor a perfect square on the left side:
(s + -1.5)(s + -1.5) = 180.25

Calculate the square root of the right side: 13.425721582

Break this problem into two subproblems by setting 
(s + -1.5) equal to 13.425721582 and -13.425721582.

Subproblem 1

s + -1.5 = 13.425721582 Simplifying s + -1.5 = 13.425721582 Reorder the terms: -1.5 + s = 13.425721582 Solving -1.5 + s = 13.425721582 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + s = 13.425721582 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + s = 13.425721582 + 1.5 s = 13.425721582 + 1.5 Combine like terms: 13.425721582 + 1.5 = 14.925721582 s = 14.925721582 Simplifying s = 14.925721582

Subproblem 2

s + -1.5 = -13.425721582 Simplifying s + -1.5 = -13.425721582 Reorder the terms: -1.5 + s = -13.425721582 Solving -1.5 + s = -13.425721582 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + s = -13.425721582 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + s = -13.425721582 + 1.5 s = -13.425721582 + 1.5 Combine like terms: -13.425721582 + 1.5 = -11.925721582 s = -11.925721582 Simplifying s = -11.925721582

Solution

The solution to the problem is based on the solutions from the subproblems. s = {14.925721582, -11.925721582}

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