8. 1, 5, a, 5a, 2b+5m, 5(2b+5m), a (2b+5 m), 5a (2b+5m).

5.

6.

24 a b2 + 9 b3 x + 22 a2 y

42 a2 b3

27 q2 x2 y + 6 a b p2 + 2 p x y2

12 p3 q2

5 ax y2+5bx y2 + 33 x2 y + 117 a

7.

8.

63 m n1 x y +70 b c n3 +60 h x

525 m3 n4

150 m x2 y2 +70 b c x y2 + 35 c2 y2 +56 a x2 350 x3 y2

105 a3 +364 a2+390 b

9.

910 a

2+2x4

10.

11.

12.

13.

14.

12 m2

3a2+11 62

15.

196

22.

b c + m p x + mpy