3.解方程:4y2+4y-1=-10-8y.
4.解方程:x(x-3)=10
5.解方程:(x-1)(x-3)=8
6.解方程:x2-2=-2 x
7.解方程:4x(3x-2)=6x-4. 8.解方程:3x(7-x)=18-x(3x-15);
9.解方程:5x2-8x+2=0. 10.解方程:x2+12x+27=0.11.解方程:2x2-4x+1=0(用配方法) 12.解方程:4(x-1)2=9(x-5)2 13.解方程:x2﹣6=﹣2(x+1) 14.解方程:x2+4x﹣5=0.15.解方程:2x2+5x﹣1=0.16.解方程:3(x-2)2=x(x-2):17.解方程:2x2-3x-2=0 18.解方程:2x2-7x+1=0
19.解方程:x2﹣6x﹣4=0(用配方法) 20.解方程:x2-4x-3=0
21.解方程:x²-5x+2=0 22.解方程:x2﹣4x+8=0;
23.解方程:3x2-6x+4=0 24.解方程:(x-2)(x-3)=12
25.解方程:(x﹣3)(x+7)=﹣9 26.解方程:3x2+5(2x+1)=0(公式法) 27.解方程:x2﹣12x﹣4=0;28.解方程:(x﹣5)(x﹣6)=x﹣5.29.解方程:x2﹣8x﹣10=0;30.解方程:x(x﹣3)=15﹣5x;
31.解方程:5x(x﹣3)=(x+1)(x﹣3) 32.解方程:x2+8x+15=0
33.解方程:25x2+10x+1=0 34.解方程:x2﹣7=﹣6x.(配方法)
35.解方程:x2+4x﹣5=0(配方法) 36.解方程:4(x+3)2﹣(x﹣2)2=0(因式分解法)37.解方程:2x2+8x﹣1=0(公式法) 38.解方程:2x2-4x-1=0.
39.解方程:(2x﹣5)2﹣(x+4)2=0.40.解方程:(x+1)(x﹣2)=2x(x﹣2) 41.解方程:4x2﹣6x﹣3=0(运用公式法) 42.解方程:2x2﹣x﹣3=0.
43.解方程:(x+3)(x-1)=12 44.解方程:x2+3=3(x+1)
45.解方程:x2-2x-24=0. 46.解方程:4x2-7x+2=0.47.解方程:x2-2x=2x+1;48.解方程:2(t-1)2+t=1;
49.解方程:(3x-1)2-4(2x+3)2=0. 50.解方程:x2-6x-4=0;
51.解方程:x(x﹣3)=4x+6.52.解方程:y2+3y+1=0;53.解方程:3y2+4y-4=0 54.解方程:(x-3)2-2x(x-3)=0
55.解方程:x2﹣2x=4 56.解方程:3(x﹣1)2=x(x﹣1) 57.解方程:3x2﹣6x+1=0(用配方法) 58.解方程:3(x-5)2=2(5-x) 59.解方程:3x2+5(2x+1)=0 60.解方程:x2+6x=9.
61.解方程:x2﹣2x=x﹣2.62.解方程:(2x﹣1)2=(3﹣x)2 63.解方程:2x2-10x=3. .解方程:(x﹣1)(x﹣3)=8.65.解方程:3x2+2x-5=0;66.解方程:(1-2x)2=x2-6x+9.
67.解方程:5(3x-2)2=4x(2-3x).68.解方程:(2x+1)2+4(2x+1)+3=0.
69.解方程:2x2+3=7x; 70.解方程:(2x+1)2+4(2x+1)+3=0.
71.解方程:x2﹣2x﹣3=0.72.解方程:x﹣3=4(x﹣3)273.解方程:(x+1)(x-1)=2x;74.解方程:3x2-7x+4=0.
75.解方程:(x+2)2﹣10(x+2)=0.76.解方程:x2+3x+2=0;
77.解方程:(x-1)2-2(x2-1)=0 78.解方程:x2-4x+2=0;
79.解方程:x2﹣5x+1=0;80.解方程:x2﹣2x=4.
81.解方程:x2+3x-2=0. 82.解方程:x2-5x+1=0(用配方法)83.解方程:x2+5x﹣6=0(因式分解法) 84.解方程:x2+3x﹣4=0(公式法)
85.解方程:x2﹣4x+1=0(配方法) 86.解方程:(x﹣5)2=16 (直接开平方法)87.解方程:(x﹣1)(x+2)=6. 88.解方程:2x2+3x+1=0
.解方程:(3x+1)2=9x+3. 90.解方程:5x2﹣3x=x+1
91.解方程:(x﹣4)2=(5﹣2x)2. 92. 解方程:(2x+1)2+15=8(2x+1)93.解方程:x2+x﹣1=0. 94.解方程:2x2﹣3x﹣1=0.95.解方程:x2-2x-3=0 96.解方程:3x2-7x+4=0.
97.解方程:(x+3)(x-1)=12 98.解方程:x2-x-6=0
99.解方程:2x2﹣4x=1(用配方法) 100.解方程:(x+8)(x+1)=-12参
1.答案为:x
=,x2=.
1
2.答案为:x
=1,x2=-3.5.
1
3.答案为:y
=y2=-1.5.
1
4.答案为:x
=5,x2=-2.
1
5.答案为:x
=5,x2=-1.
1
6.答案为:∴,
7.答案为:x
=1/2,x2=-2/3.
1
8.答案为:x=3
9.答案为:
10.答案为:x
=-3,x2=-9.
1
11.答案为:
12.答案为:x
=13,x2=-3.4.
1
13.答案为:x
=﹣1+,x2=﹣1﹣.
1
14.答案为:x
=1,x2=﹣5.
1
15.答案为:x=.
16.答案为:x
=2,x2=3.
1
17.答案为:x
=-0.5,x2=-2.
1
18.答案为:;
19.答案为:x
=-3+,x2=-3-
1
20.答案为:x=
2
7
21.答案为:略;
22.答案为:x
=x2=2;
1
23.方程无实根;
24.答案为:x
=-1,x2=6. ;
1
25.答案为:x
=﹣6,x2=2;
1
26.答案为:∴x1=,x2=.
27.答案为:x
=6+2,x2=6﹣2;
1
28.答案为:x
=5,x2=7.
1
29.答案为:x
=4+,x2=4﹣;
1
30.答案为:x
=3,x2=﹣5
1
31.答案为:x
=3,x2=0.25.
1
32.答案为:x
=-3,x2=-5.
1
33.答案为:x
=x2=-0.2.
1
34.答案为:x
=1,x2=﹣7.
1
35.答案为:x
=﹣5,x2=1;
1
36.答案为:x
=﹣4/3,x2=﹣8;
1
37.答案为:x
=,x2=.
1
38.答案为:x
=+1,x2=1-
1
39.答案为:x
=1/3,x2=9.
1
40.答案为:x
=2,x2=1.
1
41.答案为:,;
42.答案为:x
=1.5,x2=﹣1.
143.答案为:
44.答案略;
45.答案为:x
=0,x2=3;
1
46.答案为:x
=+,x2=-.
1
47.答案为:x
=2+,x2=2-.
1
48.答案为:t
=1,t2=.
1
49.答案为:x
=-,x2=-7.
1
50.答案为:x
=3+,x2=3-.
1
51.答案为:x
=,x2=.
1
52.答案为:y
=,y2=.
1
53.答案为:
54.答案为:x
=3,x2=-3;
1
55.答案为:∴x
=1﹣,x2=1+;
1
56.答案为:x
=1,x2=1.5.
1
57.答案为:x
=1+,x2=1﹣;
1
58.答案为:x
=5,x2=13/3.
1
59.答案为:
60.答案为:x
=﹣3+3,x2=﹣3﹣3.
1
61.答案为:x
=2,x2=1.
1
62.答案为:
63.答案为:x 1=,x 2=. .答案为:x 1=5,x 2=﹣1. 65.答案为:x 1=1,x 2=-
. 66.答案为:x 1=
,x 2=-2. 67.答案为:x 1=,x 2=.
68.答案为:x 1=-1,x 2=-2.
69.答案为:x 1=,x 2=3.
70.答案为:x 1=-1,x 2=-2.
71.答案为:x 1=3,x 2=﹣1.
72.答案为:x 1=3,x 2=3.25;
73.答案为:x 1=+,x 2=-
74.答案为:x 1=,x 2=1 75.答案为:x 1=﹣2,x 2=8.
76.答案为:x 1=-1,x 2=2.
77.答案为:x 1=1,x 2=3.
78.答案为:x 1=22 ,x 2=2-2. 79.答案为: 80.答案为:x 1=1+,x 2=1﹣.
81.∵a=1,b=3,c=-2,∴Δ=32-4×1×(-2)=17,
∴x=
,∴x 1=,x 2=.
83.x1=﹣6,x2=1.
84.答案为:x
=﹣4,x2=1;
1
85.;
86.x
=1,x2=9;
1
87.x
=,x2=.
1
88.x1=﹣0.5,x2=﹣1;
.x1=﹣,x2=.
90.x
=﹣0.2,x2=1;
1
91.x
=3,x2=1.
1
92.x
=1,x2=2.
1
93.x
=,x2=.
1
94.x
=,x2=.
1
95.
96.解:(3)x
=,x2=1
1
97.
98.
99.x
=1+,x2=1﹣.
1
100.1=﹣4,x2=﹣5.