s^2+2s-10=0

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


Simplifying
s2 + 2s + -10 = 0

Reorder the terms:
-10 + 2s + s2 = 0

Solving
-10 + 2s + 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 + 2s + 10 + s2 = 0 + 10

Reorder the terms:
-10 + 10 + 2s + s2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 2s + s2 = 0 + 10
2s + s2 = 0 + 10

Combine like terms: 0 + 10 = 10
2s + s2 = 10

The s term is 2s.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2s + 1 + s2 = 10 + 1

Reorder the terms:
1 + 2s + s2 = 10 + 1

Combine like terms: 10 + 1 = 11
1 + 2s + s2 = 11

Factor a perfect square on the left side:
(s + 1)(s + 1) = 11

Calculate the square root of the right side: 3.31662479

Break this problem into two subproblems by setting 
(s + 1) equal to 3.31662479 and -3.31662479.

Subproblem 1

s + 1 = 3.31662479 Simplifying s + 1 = 3.31662479 Reorder the terms: 1 + s = 3.31662479 Solving 1 + s = 3.31662479 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + s = 3.31662479 + -1 Combine like terms: 1 + -1 = 0 0 + s = 3.31662479 + -1 s = 3.31662479 + -1 Combine like terms: 3.31662479 + -1 = 2.31662479 s = 2.31662479 Simplifying s = 2.31662479

Subproblem 2

s + 1 = -3.31662479 Simplifying s + 1 = -3.31662479 Reorder the terms: 1 + s = -3.31662479 Solving 1 + s = -3.31662479 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + s = -3.31662479 + -1 Combine like terms: 1 + -1 = 0 0 + s = -3.31662479 + -1 s = -3.31662479 + -1 Combine like terms: -3.31662479 + -1 = -4.31662479 s = -4.31662479 Simplifying s = -4.31662479

Solution

The solution to the problem is based on the solutions from the subproblems. s = {2.31662479, -4.31662479}

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