下面几道因式分解题答案
.因式分解3a3b2c-6a2b2c2+9ab2c3=
3.因式分解xy+6-2x-3y=
4.因式分解x2(x-y)+y2(y-x)=
5.因式分解2x2-(a-2b)x-ab=
6.因式分解a4-9a2b2=
7.若已知x3+3x2-4含有x-1的因式,试分解x3+3x2-4=
8.因式分解ab(x2-y2)+xy(a2-b2)=
9.因式分解(x+y)(a-b-c)+(x-y)(b+c-a)=
10.因式分解a2-a-b2-b=
11.因式分解(3a-b)2-4(3a-b)(a+3b)+4(a+3b)2=
12.因式分解(a+3)2-6(a+3)=
13.因式分解(x+1)2(x+2)-(x+1)(x+2)2=
abc+ab-4a=.
(2)16x2-81=.
(3)9x2-30x+25=.
(4)x2-7x-30=
35.因式分解x2-25=.
36.因式分解x2-20x+100=.
37.因式分解x2+4x+3=.
38.因式分解4x2-12x+5=.
39.因式分解下列各式:
(1)3ax2-6ax=.
(2)x(x+2)-x=.
(3)x2-4x-ax+4a=.
(4)25x2-49=.
(5)36x2-60x+25=.
(6)4x2+12x+9=.
(7)x2-9x+18=.
(8)2x2-5x-3=.
(9)12x2-50x+8=.
40.因式分解(x+2)(x-3)+(x+2)(x+4)=.
41.因式分解2ax2-3x+2ax-3=.
42.因式分解9x2-66x+121=.
43.因式分解8-2x2=.
44.因式分解x2-x+14=.
45.因式分解9x2-30x+25=.
46.因式分解-20x2+9x+20=.
47.因式分解12x2-29x+15=.
48.因式分解36x2+39x+9=.
49.因式分解21x2-31x-22=.
50.因式分解9x4-35x2-4=.
51.因式分解(2x+1)(x+1)+(2x+1)(x-3)=.
52.因式分解2ax2-3x+2ax-3=.
53.因式分解x(y+2)-x-y-1=.
54.因式分解(x2-3x)+(x-3)2=.
55.因式分解9x2-66x+121=.
56.因式分解8-2x2=.
57.因式分解x4-1=.
58.因式分解x2+4x-xy-2y+4=.
59.因式分解4x2-12x+5=.
60.因式分解21x2-31x-22=.
61.因式分解4x2+4xy+y2-4x-2y-3=.
62.因式分解9x5-35x3-4x=.
63.因式分解下列各式:
(1)3x2-6x=.
(2)49x2-25=.
(3)6x2-13x+5=.
(4)x2+2-3x=.
(5)12x2-23x-24=.
(6)(x+6)(x-6)-(x-6)=.
(7)3(x+2)(x-5)-(x+2)(x-3)=.
(8)9x2+42x+49=.