FunKwadrat

package com.company;

public class Funkcja {

    private double a,b,c;

    public Funkcja(int a, int b, int c){
        this.a = a;
        this.b = b;
        this.c = c;
    }

    public double Zwrot(double x){

        return a*(x*x) + b*x + c;
    }
    private double x1,x2;
    public int Licz(){
        double delta = (b*b) - 4 * a * c;
        if(delta > 0){
             x1 = - (Math.sqrt(delta) - b)/ 2*a;
             x2 = - (Math.sqrt(delta) + b)/ 2*a; // maja byc w prywatnych polach, ale nie wiem jak to zrobic
            return 2;
        }
        if(delta == 0) {
            x1 = (-b)/2*a;
            return 1;}
        else return 0;
    }
}