[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 -

[题目]已知当 arrow 0 时, ((1+a{x)^2)}^dfrac (1{3)}-1 与 https:/img.zuoyebang.cc/zyb_4d9

分解因式：(1) (x)^2-7x+3;-|||-__(1) (x)^2-7x+3;-|||-__(1) (x)^2-7x+3;-|||-__分解因式：

4、曲线 https:/img.zuoyebang.cc/zyb_c011ae167cb571e3b691355621d443db.jpg=(x)^3-4(x)

[题目]因式分解-|||-(1) 4a(x-3)+2b(3-x)-|||-(2) ^4-18(x)^2+81-|||-(3) ((1-b))^3+2((b-1)

[题目]求函数 (x,y)=1|2(x)^2-4xy+9(y)^2+3x-14y+-|||-1/2 的极值

[题目]合并同类项.-|||-(1) (x)^2y-2xy-4x(y)^2+xy+4(x)^2y-3x(y)^2;-|||-(2) dfrac (1)(5)(x

1.设函数 (x)=dfrac (1)(x) ,g(x)=1-x 则 [ g(x)] = ()-|||-① https:/img.zuoyebang.cc/zy

15.求下列函数的极值.-|||-(1) (x,y)=(x)^3-4(x)^2+2xy-(y)^2+3 ;-|||-(2) (x,y)=3xy-(x)^3-(y

计算：（1）（5a+4c+7b）+（5c-3b-6a）；（2）（8xy-x2+y2）-（x2-y2+8xy）；（3）（(1)/(3)(x^2)-1+3x）-4（

-dfrac (2)({x)^2} .-|||-C 2x+3 ;-|||-D https:/img.zuoyebang.cc/zyb_c1dbf8c08bc60