s^2-4s-10=0

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Solution for s^2-4s-10=0 equation: 


Simplifying
s2 + -4s + -10 = 0

Reorder the terms:
-10 + -4s + s2 = 0

Solving
-10 + -4s + s2 = 0

Solving for variable 's'.

Begin completing the square.

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + -4s + 10 + s2 = 0 + 10

Reorder the terms:
-10 + 10 + -4s + s2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + -4s + s2 = 0 + 10
-4s + s2 = 0 + 10

Combine like terms: 0 + 10 = 10
-4s + s2 = 10

The s term is -4s.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4s + 4 + s2 = 10 + 4

Reorder the terms:
4 + -4s + s2 = 10 + 4

Combine like terms: 10 + 4 = 14
4 + -4s + s2 = 14

Factor a perfect square on the left side:
(s + -2)(s + -2) = 14

Calculate the square root of the right side: 3.741657387

Break this problem into two subproblems by setting 
(s + -2) equal to 3.741657387 and -3.741657387.


Subproblem 1
s + -2 = 3.741657387

Simplifying
s + -2 = 3.741657387

Reorder the terms:
-2 + s = 3.741657387

Solving
-2 + s = 3.741657387

Solving for variable 's'.

Move all terms containing s to the left, all other terms to the right.

Add '2' to each side of the equation.
-2 + 2 + s = 3.741657387 + 2

Combine like terms: -2 + 2 = 0
0 + s = 3.741657387 + 2
s = 3.741657387 + 2

Combine like terms: 3.741657387 + 2 = 5.741657387
s = 5.741657387

Simplifying
s = 5.741657387


Subproblem 2
s + -2 = -3.741657387

Simplifying
s + -2 = -3.741657387

Reorder the terms:
-2 + s = -3.741657387

Solving
-2 + s = -3.741657387

Solving for variable 's'.

Move all terms containing s to the left, all other terms to the right.

Add '2' to each side of the equation.
-2 + 2 + s = -3.741657387 + 2

Combine like terms: -2 + 2 = 0
0 + s = -3.741657387 + 2
s = -3.741657387 + 2

Combine like terms: -3.741657387 + 2 = -1.741657387
s = -1.741657387

Simplifying
s = -1.741657387


Solution
The solution to the problem is based on the solutions
from the subproblems.
s = {5.741657387, -1.741657387}

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