Kvadratic - Elixir

defmodule Kvadra do

    def kvadratic(a,b,c) do
        disc = discrim(a,b,c)
        
        case disc do
            _ when disc > 0 -> two_roots(a,b,disc)
            
            0 -> one_root(a,b)
            
            _ -> "Diskriminant je zaportny - zadne realne koreny."
        end
    end
    
    defp discrim(a,b,c), do: b * b - 4 * a * c
    
    defp one_root(a, b), do: {-b / (2 * a)}
    
    defp two_roots(a,b,disc) do
        root1 = (-b + :math.sqrt(disc)) / (2 * a)
        root2 = (-b - :math.sqrt(disc)) / (2 * a)
        {root1, root2}
    end

end

IO.inspect(Kvadra.kvadratic(2,6,-20))