第2个回答 2011-09-03
1. 3(x-2)2=2x-4
2.
3. 200(1+x)2=1000
4.x2-5x+6=0
5.
6.
7.5000(1-x)2= 4050
8.
9.
10. 10
11.
12.x2 + x – 1 = 0
13.x²-4x=0
14. ;
15.
16
18.
19. x2 + x ─ 1 = 0,
20.x2-4x-1=0
21.
22.
23.
24.
25.(x-5)2=16
26.x2-4x+1=0
27.x3-2x2-3x=0
28.x2+5x+3=0
29. 2x2-8x-9=0
30.x2-4x+3=0
31. x2-5x=0
32. (x2+x)2+(x2+x)=6
33.y2+y-6=0;
34.x3-x=0
35.x2-x=0
36.x2-4x-3=0
37.x2-6x+8=0
38.x2 -2x-2=0.
39.(x-1)(x+2)=70;
40.2(x-1)2+5(x-l)+2=0.
41.(3x+1)2=7
42. 9x2-24x+16=11
43.3x2-4x-2=0
44. 2x2-8x=-5
45. (x+3)(x-6)=-8
46. 2x2+3x=0
47. 6x2+5x-50=0
48.x2-2(x +1 )x+4=0
49.x2-9x+8=0
50.x2+6x-27=0
51.x2-2x-80=0
52x2+10x-200=0
53.x2-20x+96=0
54.x2+23x+76=0
55.x2-25x+154=0
56.x2-12x-108=0
57.x2+4x-252=0
58.x2-11x-102=0
59.x2+15x-54=0
60.x2+11x+18=0
61.x2-9x+20=0
62.x2+19x+90=0
63.x2-25x+156=0
64.x2-22x+57=0
65.x2-5x-176=0
66. .x2-26x+133=0
67. .x2+10x-11=0
68. .x2-3x-304=0
69. .x2+13x-140=0
70. .x2+13x-48=0
71. .x2+5x-176=0
72.x2+14x+45=0