Formuli Sukrateno Umnojenie

//Формули за съкратено умножение
    private void Suk()
    {
        int n = Random.Range(1, 6);
        switch (n)
        {
            case 1:
                quest.text= "(x + y)^2 = ";
                tr.text = "x^2 + 2xy + y^2";
                fal.text = "x^2 + y^2^";
                break;
            case 2:
                quest.text = "(x - y)^2 = ";
                tr.text = "x^2 - 2xy + y^2";
                fal.text = "x^2 - y^2"; ; break;
            case 3:
                quest.text = "(x + y)^3 = ";
                tr.text = "x^3 + 3x^2 *y + 3x* y^2 + y^3";
                fal.text = "x^3 + y^3"; ; break;
            case 4:
                quest.text = "(x - y)^3 = ";
                tr.text = "x^3 - 3x^2 *y + 3x* y^2 - y^3";
                fal.text = "x^3 - y^3";  break;
            case 5:
                quest.text = "x^2 - y^2 =";
                tr.text = "(x - y)(x + y)";
                fal.text = "(x - y)(x - y)"; break;


        }
    }