1А: а(b+c)
2A: m(n-p)
3A: x(a-y)
4A: -k(m+p)
5A: 6(x+y)
6A: 3(m-n)
7A: 4(a-3b)
8A: -5(3x+5y)
1B: mn^3(m+n-m^2n)
2B: 5a^3b(a-2b+3)
3B: x^4y^5(2xy-3+x^2y^2)
4B: (x-y)(3a+2b)
5B: (c+2)(1+4a)
6B: 4(m+n)(2(m+n)-1)
7B: (a+2)(p-3)
8B: (x+y)(k(x+y)-p)
1C: (y-7)(x+a)
2C: (k+5)(b-n)
3C: (p-6)(y-b)
4C: (t-8)(p+k)
5C: (a-b)(5(a-b)-3)
6C: (a-b)(7(a-b)+6)
7C: (b-a)(3(b-a)-4)
8C: (x-y)^2(7-(x-y))
1А: а(b+c)
2A: m(n-p)
3A: x(a-y)
4A: -k(m+p)
5A: 6(x+y)
6A: 3(m-n)
7A: 4(a-3b)
8A: -5(3x+5y)
1B: mn^3(m+n-m^2n)
2B: 5a^3b(a-2b+3)
3B: x^4y^5(2xy-3+x^2y^2)
4B: (x-y)(3a+2b)
5B: (c+2)(1+4a)
6B: 4(m+n)(2(m+n)-1)
7B: (a+2)(p-3)
8B: (x+y)(k(x+y)-p)
1C: (y-7)(x+a)
2C: (k+5)(b-n)
3C: (p-6)(y-b)
4C: (t-8)(p+k)
5C: (a-b)(5(a-b)-3)
6C: (a-b)(7(a-b)+6)
7C: (b-a)(3(b-a)-4)
8C: (x-y)^2(7-(x-y))