public void umn_ch()
        {
            mnogochlen m1       = new mnogochlen(1, 2, 3);
            int        ch       = 3;
            mnogochlen expected = new mnogochlen(3, 6, 6);
            mnogochlen actual   = new mnogochlen();

            actual = m1 * ch;
            Assert.ReferenceEquals(expected, actual);
        }
        public void minus()
        {
            mnogochlen m1       = new mnogochlen(3, 3, 3);
            mnogochlen m2       = new mnogochlen(2, 2, 2);
            mnogochlen expected = new mnogochlen(1, 1, 1);
            mnogochlen actual   = new mnogochlen();

            actual = m1 - m2;
            Assert.ReferenceEquals(expected, actual);
        }