2) (7a)4 : (7a); 6.
5
2
51) (5x)3 : (5x);
3) (6xy)?: (6xy)";
4)
ab
:
ab
6) (x - 1)4 : (x - 1)3;
5) (a + 2)5 : (a + 2);
7) (2m - 3n)10 : (2m - 3n)9;
8) (4p + 5q)8 : (4p + 5q)6.
7. 61) (6a)! : (6a)3 : (6a)2;
2) (26)5 : (26)2 : (26);
3) (a + x)6 : (a + x)2 : (a + x)3;
4) (c + d)': (c + d)4 : (c + d2.