s^2+2s+k=0

Solution for s^2+2s+k=0 equation:

Simplifying
s2 + 2s + k = 0

Reorder the terms:
k + 2s + s2 = 0

Solving
k + 2s + s2 = 0

Solving for variable 'k'.

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

Add '-2s' to each side of the equation.
k + 2s + -2s + s2 = 0 + -2s

Combine like terms: 2s + -2s = 0
k + 0 + s2 = 0 + -2s
k + s2 = 0 + -2s
Remove the zero:
k + s2 = -2s

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

Combine like terms: s2 + -1s2 = 0
k + 0 = -2s + -1s2
k = -2s + -1s2

Simplifying
k = -2s + -1s2