s^2+10s-13=0

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Solution for s^2+10s-13=0 equation:


Simplifying
s2 + 10s + -13 = 0

Reorder the terms:
-13 + 10s + s2 = 0

Solving
-13 + 10s + s2 = 0

Solving for variable 's'.

Begin completing the square.

Move the constant term to the right:

Add '13' to each side of the equation.
-13 + 10s + 13 + s2 = 0 + 13

Reorder the terms:
-13 + 13 + 10s + s2 = 0 + 13

Combine like terms: -13 + 13 = 0
0 + 10s + s2 = 0 + 13
10s + s2 = 0 + 13

Combine like terms: 0 + 13 = 13
10s + s2 = 13

The s term is 10s.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10s + 25 + s2 = 13 + 25

Reorder the terms:
25 + 10s + s2 = 13 + 25

Combine like terms: 13 + 25 = 38
25 + 10s + s2 = 38

Factor a perfect square on the left side:
(s + 5)(s + 5) = 38

Calculate the square root of the right side: 6.164414003

Break this problem into two subproblems by setting 
(s + 5) equal to 6.164414003 and -6.164414003.

Subproblem 1

s + 5 = 6.164414003 Simplifying s + 5 = 6.164414003 Reorder the terms: 5 + s = 6.164414003 Solving 5 + s = 6.164414003 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + s = 6.164414003 + -5 Combine like terms: 5 + -5 = 0 0 + s = 6.164414003 + -5 s = 6.164414003 + -5 Combine like terms: 6.164414003 + -5 = 1.164414003 s = 1.164414003 Simplifying s = 1.164414003

Subproblem 2

s + 5 = -6.164414003 Simplifying s + 5 = -6.164414003 Reorder the terms: 5 + s = -6.164414003 Solving 5 + s = -6.164414003 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + s = -6.164414003 + -5 Combine like terms: 5 + -5 = 0 0 + s = -6.164414003 + -5 s = -6.164414003 + -5 Combine like terms: -6.164414003 + -5 = -11.164414003 s = -11.164414003 Simplifying s = -11.164414003

Solution

The solution to the problem is based on the solutions from the subproblems. s = {1.164414003, -11.164414003}

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