class QuadTest {
    public static void main(String[] args) {
        double a=1, b=-4, c=3;
        System.out.println( Quadratic.root1(a,b,c) );
        System.out.println( Quadratic.root2(a,b,c) );
        // System.out.println( Quadratic.discrim(a,b,c) );
    }
}