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

5 a x y2 + 5 b x y2 + 33 x2 y + 117 a
225 x3 y2

5.

8.

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

·2 m2 n + n3

2n

23

5a+3b
4

11 m3 + 7 m n2.

24.

7m