ruhadzealinka A)   (a' 3+a)-(6a+6)=a(a'2+1)-6(a+1)=a(a-1)(a+1)-6(a+1)=(a+1)(a-1)(a-6)
б) 6a-12c+am-2mc=6(a-2c)+m(a-2c)=(a-2c)(6+m)

alenaapsh 1) а³-6а²+а-6=а³+а-6а²-6=а(а²-1)-6(а²-1)=(а-1)(а+1)(а-6)
2)6а-12с+аm-2mc=6(a-2c)+m(a-2c)=(a-2c)(6+m)
3)2y-2x-x+ax-ау+у=х(-2-1+а)+у(2-а+1)= -х(2+1-а)+у(2+1-а)=(2+1-а)(у-х)