íïî8-x³1-3(x-1)
16.(2012年苏州•本题满分5分)先化简,再求值:
2a2-4a+4a+1+·,其中a=2+1.2a-1a-1a-2
17.(2012年苏州•本题满分6分)解分式方程:
314.+=2x+2xx+2x
18.(5分)
(2013•苏州)计算:
(﹣1)+(3
+1)+
0
.19.(5分)
(2013•苏州)解不等式组:
.
20.(5分)
(2013•苏州)先化简,再求值:
÷(x+1﹣),其中x=
﹣2.
21.(5分)
(2014•苏州)计算:
22+|﹣1|﹣
.
22.(5分)
(2014•苏州)解不等式组:
.
23.(5分)
(2014•苏州)先化简,再求值:
,其中
.
24.(6分)
(2014•苏州)解分式方程:
+
=3.
25.(2015年苏州•本题满分5分)计算:
9+-5-2-3.
(
)
0
ìïx+1³2,26.(2015年苏州•本题满分5分)解不等式组:
íïî3(x-1)>x+
5.
27.(2015年苏州•本题满分6分)
1öx2+2x+1æ先化简,再求值:
ç1-,其中x=3-1.÷¸x+2èx+2ø
28.(2016年苏州)计算:
()2+|﹣3|﹣(π+)0.29.(2016年苏州)解不等式2x﹣1>,并把它的解集在数轴上表示出来.
30.(2016年苏州)先化简,再求值:
÷(1﹣
0),其中x=
.
31.(2017年苏州•本题满分5分)计算:
-1+4-(p-3).
32.(2017年苏州•本题满分5分)解不等式组:
í
ìïx+1³4.ïî2(x-1)>3x-6
33.(2017年苏州•本题满分6分)先化简,再求值:
ç1-
æè
5öx2-9,其中x=3-2.÷¸x+2øx+3
模拟训练:
11.(2017年高新区•本题满分5分)计算:
(-3)2-4+()-1.2
2.(2017年高新区•本题满分5分)解方程1-
12x.=x-11-x
23.(2017年高新区•6分)先化简,再求值:
(1-1)×a+2a+1,其中a=2-1.a+1a
4.计算:
(2017年吴江区•本题满分5分)4+()-2cos60°+(2-p)
-1
12
0
5.(2017年吴江区•本题满分6分)
ì2-x£2(x+4)ï解不等式组í,并写出该不等式组的最大整数解.x-1x<+1ï3î6.(2017年吴江区•本题满分6分)先化简,再求值:
(bba+)¸2,其中a=2017,b=2.a+ba-ba-b2
7.(2017年吴中区•本题满分5分)计算:
9-(1-2)0+-5
ì3x-3³2x+7ï8.(2017年吴中区•本题满分5分)解不等式组í2x+4<3-xïî3
9.(2017年吴中区•本题满分6分)
3x2+4x+4-x+1)¸先化简,再求值:
(,其中x=2-2。
x+1x+1
10.(2017年相城区•本题满分5分)计算:
-3+()-(p-3)
-1
13
0
11.(2017年相城区•本题满分5分)解不等式:
x+1<
4x-13
12.(2017年相城区•本题满分6分)先化简,再求值:
x1¸(1+),其中x=2-1.x-1x-1
2
13.(2017年相城区•本题满分8分)己知a-1+b+2=0,求方程
a+bx=1的解.x
14.(立达中学★胥江•本题满分5分)计算:
(3)2--2+(p-5)0.ìïx-1>215.(立达中学★胥江•本题满分5分)解不等式组:
íïî2+x³2(x-1)
16.(立达中学★胥江•本题满分6分)
x1öæ¸ç1+÷,其中x=2-1.x-1èx-1ø
2
117.(2017年太仓•本题满分4分)计算:
38+()-2-3tan30°.3
18.(2017年太仓•5分)先化简,再求值:
1öx÷æç1+÷,其中x=2-1.x-1èx-1ø
2
ì6-2x>2x-6ï19.(2017年太仓•6分)解不等式组í3+x,并写出它的整数解.2x+1>ïî2
20.(无锡滨湖区2017年•8分)
æ1ö0
(1)计算:
ç÷-27-sin60°+(p-2017)3èø
-2;
(2)化简:
a2-a+1.a+1
21.(无锡滨湖区2017年•8分)
2
(1)解方程:
x-6x-5=0
ì2x-1>3xï
(2)解不等式组í1x-3£x-1ï2î
22.(蔡老师预测•本题满分5分)计算:
2017--2+(-3)-().
02
14
-1
23.(蔡老师预测•5分)解不等式组表示.:
并将解集在数轴上
24.
(蔡老师预测•6分)bba先化简,再求值:
(+)÷2.其中a=2017,b=2。
a+ba-ba-b2
25.(2017年平江中学•本题满分5分)计算:
-2-16+(3-p).
0
26.(2017年平江中学•本题满分5分)解不等式组:
+x,{3xx--2(3x<-11)£
1.
27.(2017年平江中学•本题满分6分)
2先化简,再求值:
(1-1)¸x+2x+1,其中x=2-1.x+2x+2参考答案
1.9;
2.
121a+122=;
3.2,-;
4.-3(1)3,
(2);6.3;7.a-b=-2;
a+253a-11112(检验);10.2;11.x>2;12.;13.-1,(检验);14.1;=22a+12
3;
3
8.2 16.
1a2+21;
17.(检验);
18.原式=3.19.3≤x<5;
20.原式=.=2x+2a-12
21.原式=4+1﹣2=3.22.解:
则不等式组的解集为3<x≤4.23.解:
=÷(+),由①得:
x>3;由②得:
x≤4,=
÷
=
×
=,把,代入原式=
=
=
=
.
24.解:
去分母得:
x﹣2=3x﹣3,解得:
x=,经检验x=是分式方程的解.25.原式=3+5﹣1=7.26.解:
,由①得,x≥1,由②得,x>4,所以,不等式组的解集为x>4.27.解:
原式=•=,当x=﹣1时,原式==.
28.解:
原式=5+3﹣1;
29.解:
去分母,得:
4x﹣2>3x﹣1,移项,得:
4x﹣3x>2﹣1,合并同类项,得:
x>1,将不等式解集表示在数轴上如图:
30.解:
原式=
÷
=
•
=,当x=
时,原式=
=
.
31.原式=1+2-1=2.32.3£x<4;
33.原式=
x-3(x+3)(x-3)x-3x+31¸=×=.当x=3-2时,x+2x+3x+2(x+3)(x-3)x+2
原式=
113.==33-2+23
模拟训练:
1.(本题5分)解:
原式=9-2+2--------------3分=9-----------------5分
2.(本题5分)解方程:
解:
去分母得:
x-1-1=-2x-------------2分
3.(本题6分)解:
原式=
x=
经检验:
x=
23
--------------------4分
a(a+1)2--------------2分ga+1a=a+1------------------------4分
2是原方程的解.--------------5分3
当a=2-1时,原式=2--------------6分
4.4;5.-2 9.
2-x1=22-1;10.5;
11、x>4;
12、原式=2+xx+1
带入=
12;
13、a=1,b=-2x1=-1,x2=是22
原方程的解;
14.(本题共5分)解:
原式=3-2+1···············································································3分=2··························································································5分15.(本题共5分)解:
由①式得:
x>3.············································································2分由②式得:
x£4.···········································································4分∴不等式组的解集为:
3原式=2¸············································································1分x-1x-1==
xx-1×·····································································2分(x+1)
(x-1)x
1·····················································································4分x+11当x=2-1时,原式=···································································5分2
2.···················································································6分217.(本题共4分)解:
原式=2+9-1················································································3分=10························································································4分18.(本题共5分)xx解:
原式=2¸············································································1分x-1x-1
===
xx-1×·····································································2分(x+1)
(x-1)x
1·····················································································3分x+11当x=2-1时,原式=···································································4分2
2.···················································································5分219.(本题共6分)解:
由①式得:
x<3.···········································································2分1由②式得:
x>.··········································································4分31∴不等式组的解集为:
=
∴不等式组的整数解为:
1,2.·························································6分20.
(1)
(2)
解:
原式=9-53+1------(-3分)25=10-3------(-4分)2
21.
(1)
(2)
解:
x2-6x+9=5+9---1分
(x-3)2=14----2分
x-3=±14---3分\x1=3+14,x2=3-14----4分
22.-2;
解:
由
(1)得x<-1-----1分由
(2)得x£4------2分\解集是:
x<-1-----4分
a2-(a+1)(a-1)-----2分a+1a2-a2+1解:
解①得x<2,解②得x≥﹣1,则不等式组的解集是﹣=1≤x<2.----------3分a+1数轴略。
1=---------------4分
24.(法一)a+1
23.(本题5分)解不等式组:
解:
原式=
.
解:
原式=æ=
bbö(a+b)
(a-b)+·aa-bøèa+b(a+b)
(a-b)(a+b)
(a-b)bb·+·aaa+ba-b
b(a-b)b(a+b)=+aaab-b2+ab+b2==2b··········································································4分a(法二)解:
原式=ê
éb(a-b)+b(a+b)ù·(a+b)
(a-b)a(a+b)
(a-b)úë(a+b)
(a-b)ûab-b2+ab+b2(a+b)
(a-b)=·a(a+b)
(a-b)=2b························································