[题目]-|||-分组分解因式:-|||-(1) 3x-4y+xy-12 .-|||-(2) (x)^3+x+a+1 .-|||-(3) https:/img.zuoyebang.cc/zyb_eacfa8db3d6cbe4db62e40a6d1174e6f.jpg+(b-(a)^2)(x)^2-ab(x)^3 .-|||-(4) -1-2x-(x)^2+(y)^2 .-|||-(5) ^2n+(x)^n-dfrac (1)(9)(y)^4m+dfrac (1)(4) .-|||-(6) 1+a+b+c+ab+bc+ca+abc .-|||-(7) ((c)^2-(d)^2)-((a)^2-(b)^2)cd -