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1、第 3 课时分式1若分式x1x1x2有意义,则x 应满足的条件是()Ax 1Bx2 Cx 1,且 x2D以上结果都不对2(2012 年安徽)化简x2x1x1x的结果是()Ax 1 Bx1 C xD x3在括号内填入适当的代数式,使下列等式成立:(1)2ab2xa2b2;(2)a3ab2ab2aab.4(2011 年北京)若分式x8x的值为 0,则 x 的值等于 _5约分:56x3yz448x5y2z_;x29x22x3_.6已知abab15,则ab_.7当 x_时,分式x22x3x3的值为零.8(2012 年广东湛江)计算:1x 1xx21.9(2012 年广东肇庆)先化简,再求值:11x1x
2、x21,其中 x 4.10(2011 年湖南邵阳)已知1x11,求2x1x1 的值11(2012 年广东珠海)先化简,再求值:xx11x2x(x1),其中 x2.12(2011 年广东肇庆)先化简,再求值:a24a311a2,其中 a 3.13(2012 年浙江义乌)下列计算错误的是()A.0.2ab0.7ab2ab7abB.x3y2x2y3xyC.abba 1 D.1c2c3c14(2010 年广东清远)先化简,再求值:x2y2xy2xyyx,其中 x32,y32 15(2010 年福建晋江)先化简,再求值:3xx1xx1x21x,其中 x22.16(2011 年湖南常德)先化简,再求值:1
3、x1x22x1x21x1x1,其中 x2.17已知 x23x10,求 x21x2的值18先化简,再求值:x1xx2x12x2xx22x1,其中 x 满足 x2x10.文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK
4、10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8
5、W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 H
6、R5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9
7、N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10
8、ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U
9、1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4参
10、考答案1C2.D3.(1)4xab(2)ab4、8 5.7z36x2yx3x16.327.1 8解:x1x1x1xx1x11x21.9解:原式x11x1x1x1xx1.当 x 4 时,原式3.10解:1x11,x11.故原式 213.11.2212.113.A 14解:原式x2y22xyxyxy2xy xy.当 x 32,y32时,原式 2 2.15、原式3x x1x1x1x x1x1 x1x21x3x23xx2xx1x1x21x2x24xx1x1x2 1x2x x2x1x1x1 x1x2(x2)当 x22 时,原式 2(2 22)2 2.16解:原式1x1x12x1x1x1x1xx1x1x1
11、xx1.当 x2 时,原式 2.17解:由 x23x10,知 x0,两边同除以x,得 x1x3.x21x2 x1x22 32 211.18解:x1xx2x12x2xx22x1x1x1 x x2x x12x2 xx22x12x1x x1x12x 2x1x 1x2.当 x2x10,即 x2x 1 时,原式 1.文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR
12、5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N
13、7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 Z
14、P3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1
15、B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档
16、编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK1
17、0B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W
18、7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR
19、5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N
20、7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 Z
21、P3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1
22、B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档
23、编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4文档编码:CK10B5J8W7A7 HR5T7I9N7C10 ZP3Q9U1B5X4