s^2-18s-19=0

Solution for s^2-18s-19=0 equation:

Simplifying
s2 + -18s + -19 = 0

Reorder the terms:
-19 + -18s + s2 = 0

Solving
-19 + -18s + s2 = 0

Solving for variable 's'.

Factor a trinomial.
(-1 + -1s)(19 + -1s) = 0

Subproblem 1
Set the factor '(-1 + -1s)' equal to zero and attempt to solve:

Simplifying
-1 + -1s = 0

Solving
-1 + -1s = 0

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

Add '1' to each side of the equation.
-1 + 1 + -1s = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -1s = 0 + 1
-1s = 0 + 1

Combine like terms: 0 + 1 = 1
-1s = 1

Divide each side by '-1'.
s = -1

Simplifying
s = -1
Subproblem 2
Set the factor '(19 + -1s)' equal to zero and attempt to solve:

Simplifying
19 + -1s = 0

Solving
19 + -1s = 0

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

Add '-19' to each side of the equation.
19 + -19 + -1s = 0 + -19

Combine like terms: 19 + -19 = 0
0 + -1s = 0 + -19
-1s = 0 + -19

Combine like terms: 0 + -19 = -19
-1s = -19

Divide each side by '-1'.
s = 19

Simplifying
s = 19
Solution
s = {-1, 19}