20s^2+28s-3=0

Solution for 20s^2+28s-3=0 equation:

Simplifying
20s2 + 28s + -3 = 0

Reorder the terms:
-3 + 28s + 20s2 = 0

Solving
-3 + 28s + 20s2 = 0

Solving for variable 's'.

Factor a trinomial.
(-3 + -2s)(1 + -10s) = 0

Subproblem 1
Set the factor '(-3 + -2s)' equal to zero and attempt to solve:

Simplifying
-3 + -2s = 0

Solving
-3 + -2s = 0

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

Add '3' to each side of the equation.
-3 + 3 + -2s = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -2s = 0 + 3
-2s = 0 + 3

Combine like terms: 0 + 3 = 3
-2s = 3

Divide each side by '-2'.
s = -1.5

Simplifying
s = -1.5
Subproblem 2
Set the factor '(1 + -10s)' equal to zero and attempt to solve:

Simplifying
1 + -10s = 0

Solving
1 + -10s = 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 + -10s = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -10s = 0 + -1
-10s = 0 + -1

Combine like terms: 0 + -1 = -1
-10s = -1

Divide each side by '-10'.
s = 0.1

Simplifying
s = 0.1
Solution
s = {-1.5, 0.1}