А. (m-9)(m+9)
б. (b-11c)(b+11c)
в. (13m-4n)(13m+4n)
г. (6m-kp)(6m+kp)
1.
54: 2, 3, 3, 3.
65: 5, 13.
99: 11, 3, 3.
162: 2, 3, 3, 3, 3.
10000: 2, 5, 5, 5, 5, 2, 2, 2.
2.
1500: 5, 5, 5, 3, 2,2.
7000: 5, 5, 5, 2, 2, 7, 2.
3240: 5, 2, 2, 2, 3, 3, 3, 3.
4608: 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3.