1. 1, a, a2, b, b2, ab, a2 b, a b2, a2 b2. 2. 1, a, a2, b, ab, a2 b, b2, a b2, a2 b2, c, ac, a2c, bc, abc, a2bc, b2c, a b2 c, a2 b2 c, c2, a c2, a2 c2, b c2, a b c2, a2 b c2, b2 c2, a b2 c2, a2 b2 c2, c3, a c3, a2 c3, b c3, a b c3, a2 b c3, b2 c3, a b2 c3, a2 b2 c3. 3. 1, 3, 9, x, 3x, 9 x, x2, 3 x2, 9 x2, y, 3y, 9 y, xy, 3 xy, 9 xy, x2y, 3x2y, 9 x2 y, y2, 3y2, 9 y2, x y2, 3 x y2, 9 x y2, x2 y2, 3x2 y2, 9x2 y2, y3, 3 y3, 9 y3, x y3, 3 x y3, 9 x y3, x2 y3, 3 x2 y3, 9 x2 y3. 4. 1, 2, 5, 10, 25, 50, m, 2 m, 5 m, 10m, 25m, 50m, m2, 2 m2, 5 m2, 10 m2, 25 m2, 50 m2. 5. 1, 2, 3, 6, 5, 10, 15, 30, 25, 50, 75, 150. 6. 1, 2, 4, 3, 6, 12, 5, 10, 20, 15, 30, 60, 13, 26, 52, 39, 78, 156, 65, 130, 260, 195, 390, 780. 7. 1, 2, 4, a, 2a, 4a, b, 2b, 4b, ab, 2ab, 4ab, a+4, 2(a+4), 4(a+4), a (a+4), 2 a (a+4), 4a (a+4), b(a+4), 2 b (a + 4), 4 b (a + 4), a b (a + 4), 2 a b (a + 4), 4 a b (a+4). |