人教版八年级数学上册分式的加减法练习题精选

1、精选优质文档-倾情为你奉上精选优质文档-倾情为你奉上专心-专注-专业专心-专注-专业精选优质文档-倾情为你奉上专心-专注-专业x y 9xx2y3 x2y3 2 2 y b y bm4 3 m m b 6b 4b b9 b9 b9 3 33c2d 5cd2 a 4a 4a1 (4a1)2 b 4 a2b2 ab x2x7 x46x y 4xx3y2 x3y2 2 23p2a 3p2ax8 1 x x y 6y y y2 y2 y2 1 23cd2 4c2d 5b b 2b1 (2b1)2 m 5 m2b2 mb a2a5 a43x y 7yxy3 xy3 1 5 y q y qn3 7 n n

2、 b 9b 5b b8 b8 b8 3 18cd 9c2d 7y y 6y3 (6y3)2 y 6 a2y2 ay a2a3 a8 x9y 6xx2y2 x2y2 2 1 y2q y2qb1 6 b b a a 6a a3 a3 a3 1 42c2d2 9cd2 m m 6m6 (6m6)2 y 3 m2y2 my a2a6 a2 x y 2xx2y3 x2y3 4 2 m n m na7 8 a a m 5m 4m m2 m2 m2 1 27cd 7cd2 x x 2x2 (2x2)2 b 4 x2b2 xb x2x2 x5 x y 5yxy3 xy3 5 3 y2q y2qy7 3 y y

3、 b 2b b b9 b9 b9 2 44cd 7c2d2 3n n 2n9 (2n9)2 b 5 a2b2 ab m2m8 m5 x8y 5yxy2 xy2 1 33m b 3m bb1 3 b b n n n n2 n2 n2 4 32c2d2 3c2d2 x 4x 6x6 (6x6)2 n 2 m2n2 mn x2x2 x15x y 2xx3y3 x3y3 3 52p3a 2p3ab8 9 b b n 4n 5n n5 n5 n5 4 43c2d 7cd2 5m 5m 5m3 (5m3)2 x 2 x2b2 xb mm3 m7 x8y 7yx3y2 x3y2 4 3 m3b m3bm7

4、6 m m 4x 5x x x6 x6 x6 1 38c2d 7cd x x 3x4 (3x4)2 a 1 a2y2 ay mm7 m12x y 5xx3y3 x3y3 2 3 y b y ba3 1 a a 2y y y y1 y1 y1 1 18cd2 6cd 5m m 5m4 (5m4)2 m 3 m2y2 my aa9 a14x y 9xxy xy 2 42p n 2p nm4 2 m m 2y 4y y y7 y7 y7 2 16cd2 2c2d2 7y 9y 5y3 (5y3)2 b 2 a2b2 ab aa4 a78x2y 6yx3y x3y 2 5 x3q x3qa4 7 a

5、a 6m m 2m m5 m5 m5 3 32c2d2 3cd2 9m 4m 2m5 (2m5)2 n 2 a2n2 an aa9 a9 x2y 5xx2y x2y 1 33y n 3y ny5 7 y y 5y 7y y y4 y4 y4 2 19cd2 8c2d y y 6y5 (6y5)2 y 4 m2y2 my m2m5 m7 x8y 3yxy3 xy3 1 12m3a 2m3aa4 2 a a a 6a 4a a9 a9 a9 1 12c2d2 2cd2 3x x 6x7 (6x7)2 y 3 x2y2 xy xx5 x69x y 5xxy xy 3 53x b 3x by8 8 y

6、 y m m m m9 m9 m9 3 16cd 8c2d 3a 7a 2a3 (2a3)2 y 4 m2y2 my a2a7 a82x y 4yx3y3 x3y3 1 33y q 3y qn8 8 n n y y y y6 y6 y6 3 15cd2 8c2d2 7x x 4x6 (4x6)2 b 2 m2b2 mb aa1 a2 x y 3xxy3 xy3 2 1 x q x qx8 7 x x 6m m m m3 m3 m3 3 18cd2 5c2d2 a a 3a6 (3a6)2 a 6 a2n2 an m2m2 m27x y 5yx3y x3y 5 3 m n m nb1 3 b b

7、 5b 7b b b1 b1 b1 2 35cd 3cd2 n 9n 2n3 (2n3)2 n 1 m2n2 mn m2m6 m53x y 7yx3y3 x3y3 2 22y b 2y bm1 7 m m 4y 9y 3y y3 y3 y3 3 33cd2 2cd n 2n 2n4 (2n4)2 b 3 a2b2 ab x2x4 x7 x y 8xx2y x2y 1 33x3a 3x3ax8 1 x x 3y y 8y y1 y1 y1 2 39cd2 4c2d2 m 3m 6m4 (6m4)2 y 2 m2y2 my mm3 m7 x4y 8yx2y2 x2y2 1 1 p b p by1

8、1 y y b 4b b b1 b1 b1 1 39cd2 9cd2 a a 3a2 (3a2)2 n 6 a2n2 an aa9 a6 x6y 5yx3y x3y 2 52m n 2m nm9 3 m m 2n n 4n n4 n4 n4 1 45cd 4cd2 n n 6n3 (6n3)2 b 2 x2b2 xb xx3 x22x7y 7yx3y x3y 4 5 y q y qm5 5 m m 2b b b b5 b5 b5 2 18c2d 2c2d y 5y 2y3 (2y3)2 x 4 x2y2 xy xx7 x54x9y 9yx2y x2y 3 3 y q y qm8 3 m m 5

9、a a a a5 a5 a5 3 17c2d2 7c2d 7y 7y 3y1 (3y1)2 y 4 m2y2 my a2a4 a7 x4y 8yxy xy 4 43x2n 3x2ny8 7 y y 5x 5x x x9 x9 x9 3 29c2d 3cd 3b b 4b9 (4b9)2 m 3 m2y2 my x2x8 x4 x y 7xx3y3 x3y3 1 5 m q m qn8 2 n n 8m 3m 4m m3 m3 m3 4 15c2d 9cd m 7m 3m7 (3m7)2 a 2 a2b2 ab a2a9 a1 x y 8yxy2 xy2 4 22x a 2x ax3 2 x x

10、 m 7m 2m m1 m1 m1 4 25cd 9c2d2 n n 3n7 (3n7)2 m 1 m2n2 mn x2x3 x9 x y 9yx3y2 x3y2 4 3 m a m am8 4 m m 5m m m m9 m9 m9 4 34cd 5c2d y y 2y9 (2y9)2 a 1 a2b2 ab x2x1 x59x y 9yx3y3 x3y3 4 4 x2n x2nb7 9 b b y 8y 3y y6 y6 y6 3 44c2d2 8c2d2 8b 2b 6b8 (6b8)2 n 3 a2n2 an m2m7 m17x3y 5yx3y3 x3y3 2 33p n 3p ny5

11、 1 y y m 4m m m3 m3 m3 2 12cd2 5c2d2 y y 6y2 (6y2)2 b 6 a2b2 ab a2a5 a29x7y 2xx3y x3y 4 2 p3q p3qy5 3 y y m m 8m m9 m9 m9 1 37cd2 2c2d2 a a 5a8 (5a8)2 n 5 a2n2 an a2a8 a5 x y 9xx2y x2y 2 3 x q x qm8 5 m m 9a a a a8 a8 a8 1 12cd 4c2d2 a 6a 4a7 (4a7)2 a 6 a2n2 an xx8 x3 x y 8yx3y x3y 5 3 m q m qm1 5 m

12、 m 9n n 9n n6 n6 n6 2 17c2d 5c2d 6m m 3m8 (3m8)2 n 1 x2n2 xn x2x5 x4 x2y 5yx3y2 x3y2 5 5 m3b m3bx1 1 x x x x 8x x3 x3 x3 2 34c2d 6cd y y 6y7 (6y7)2 y 3 m2y2 my x2x9 x1 x y 9yx2y3 x2y3 3 23p a 3p aa4 6 a a 5y y y y5 y5 y5 3 33c2d 6c2d x 5x 6x5 (6x5)2 y 3 m2y2 my m2m8 m13x y 8xxy3 xy3 3 2 p a p am3 6 m m n n 7n n4 n4 n4 3 12c2d2 7c2d 7n n 4n2 (4n2)2 x 2 x2b2 xb m2m3 m1 x8y 8yx3y x3y 4 33p n 3p na2 9 a a b b b b6 b6 b6 4 47cd2 9c2d2 5b 7b 3b7 (3b7)2 n 2 a2n2 an x2x4 x15x y 2xx3y x3y 1 5 p n p nm5 1 m m a a a a8 a8 a8 2 45c2d2 8c2d a a 6a3 (6a3)2 y 1 x2y2 xy