人教版初中八年级数学上册因式分解练习题大全89.doc

1、65a230ab10a2bc80bc20q(x5)40q(x5)2(x5)m(x5)8149b23x23y216x216(3xy)2(5x10y)23636y9y2(xy)26m(xy)9m281x236x49a26a(mn)(mn)275a60a216abc80b2q(8b)40q(8b)6(8b)m(8b)491x232x232y236b2100(6xy)2(xy)2428b49b2(ab)28m(ab)16m225m260m3636a212a(mn)(mn)295a290a12abc60bc2p(7b)20p(7b)6(7b)m(7b)436b216x2100y20.16y2400(xy

2、)2(xy)22520m4m2(ab)26m(ab)9m236x296x6425a210a(mn)(mn)285a410a3b18ab2c90b3c2q(x3)12q(x3)4(x3)m(x3)491a227x227y249b24(8x2y)2(7xy)24942b9b2(ab)24m(ab)4m24x212x925a210a(mn)(mn)25a80a6ab3c60b3c12q(7b)16q(7b)6(7b)m(7b)91m275x248y281a2225(x4y)2(x9y)22530x9x2(xy)26m(xy)9m281n2162n8125a210a(mn)(mn)230a70a4b1

3、8a2b3c80b34p(9b)4q(9b)4(9b)m(9b)254y24x2100y20.25m281(2xy)2(x8y)22520y4y2(ab)212m(ab)36m236x2108x8125a210a(ab)(ab)230a450a416ab2c60b4c16q(6b)4p(6b)2(6b)m(6b)1009b227x23y264a2169(xy)2(x8y)264144x81x2(ab)210m(ab)25m281y2126y4916a28a(xy)(xy)225a10a320abc60b3c8q(x4)8q(x4)4(x4)m(x4)164b275x248y20.64m2169

4、(4xy)2(9xy)2930x25x2(xy)26m(xy)9m236a260a2525a210a(ab)(ab)25a90a2a4bc50b4c6q(6b)12p(6b)6(6b)m(6b)25100a22x22y281b264(x4y)2(x10y)22570y49y2(mn)212m(mn)36m216y224y99a26a(xy)(xy)275a380ab2ab2c80b216p(y6)36q(y6)6(y6)m(y6)4936b216x2100y264x216(xy)2(2xy)281162y81y2(mn)24m(mn)4m264b2112b4936a212a(xy)(xy)21

5、5a260a8a4b2c30b310p(1a)36p(1a)2(1a)m(1a)494a28x28y249n21(x6y)2(2xy)26448y9y2(ab)26m(ab)9m225x280x6436a212a(ab)(ab)290a250a42a2bc10b12p(y5)36p(y5)8(y5)m(y5)641n2100x236y225m281(5xy)2(3xy)218n16n2(mn)210m(mn)25m281a2108a364a24a(xy)(xy)230a100a16abc40bc12q(7a)40q(7a)8(7a)m(7a)14m264x236y281m2144(xy)2(5

6、x8y)249126a81a2(ab)210m(ab)25m216m264m644a24a(xy)(xy)260a340a16abc100b3c12q(3b)36q(3b)6(3b)m(3b)2516a250x28y20.81y2324(x2y)2(9x8y)2100180b81b2(xy)26m(xy)9m249x298x4936a212a(xy)(xy)240a450a414abc20b22p(3a)28q(3a)2(3a)m(3a)4981x236x216y20.09y264(xy)2(2xy)236108b81b2(mn)210m(mn)25m264a264a1636a212a(xy)

7、(xy)2100a20a220a3b3c80b4c16p(2b)4q(2b)6(2b)m(2b)499b248x227y281a24(3xy)2(x10y)21664b64b2(ab)212m(ab)36m249n228n425a210a(ab)(ab)255a50a220abc30b4c4q(x1)20p(x1)8(x1)m(x1)10064b24x2100y20.81x2169(3x6y)2(xy)24984y36y2(ab)210m(ab)25m29b26b136a212a(ab)(ab)280a380a418ab2c30b4c18q(y8)24p(y8)2(y8)m(y8)2581y2

8、27x212y29a2225(x6y)2(x10y)26432m4m2(ab)210m(ab)25m24x24x116a28a(xy)(xy)235a240a46abc100b2c4q(9a)8q(9a)2(9a)m(9a)6464x212x212y281x2361(xy)2(4xy)2912a4a2(xy)210m(xy)25m24n24n14a24a(ab)(ab)240a260a2b4a3bc100b4p(8b)16p(8b)6(8b)m(8b)10049m248x23y236a2256(xy)2(8xy)214m4m2(xy)212m(xy)36m225y240y164a24a(xy)

9、(xy)295a100a318abc100b4p(y3)20q(y3)4(y3)m(y3)949x248x275y20.04b2256(7x5y)2(5xy)22550n25n2(xy)212m(xy)36m216m240m259a26a(xy)(xy)210a90a4a3b3c100b16q(x7)4q(x7)6(x7)m(x7)41x212x23y264a2256(2x4y)2(x9y)249140a100a2(ab)212m(ab)36m225m250m2536a212a(xy)(xy)225a20a38abc60b416p(x6)8p(x6)4(x6)m(x6)10016m275x21

10、2y20.81n2144(xy)2(x8y)2114y49y2(xy)28m(xy)16m24y220y254a24a(xy)(xy)2100a20a34a4b3c10b2c16p(6b)24q(6b)8(6b)m(6b)2516b232x28y20.16x2225(4xy)2(4x8y)23636n9n2(mn)26m(mn)9m225a2100a10016a28a(mn)(mn)290a4100ab12a4bc30bc20q(y6)16p(y6)6(y6)m(y6)416x264x24y20.81b2100(xy)2(x7y)24956a16a2(mn)26m(mn)9m29m224m16

11、16a28a(xy)(xy)240a30a2b10ab3c40bc12q(x8)24q(x8)8(x8)m(x8)425a248x275y24m2100(2x4y)2(x8y)216n9n2(mn)212m(mn)36m29n218n936a212a(mn)(mn)255a390a8a4b3c80b10q(9a)12p(9a)4(9a)m(9a)964x23x23y20.64x249(x6y)2(xy)281108a36a2(mn)210m(mn)25m281x290x2525a210a(xy)(xy)25a30a314a2b2c50b10q(x9)4q(x9)6(x9)m(x9)916a23

12、x212y24y2256(xy)2(9xy)23672x36x2(xy)26m(xy)9m264n296n369a26a(mn)(mn)210a90ab18abc70b220p(3a)16p(3a)2(3a)m(3a)369x227x227y249n24(xy)2(8xy)23684n49n2(ab)26m(ab)9m24x228x4916a28a(mn)(mn)210a100a18ab3c50b48q(y4)40p(y4)2(y4)m(y4)41x24x24y20.49a225(5xy)2(2x8y)23672n36n2(ab)28m(ab)16m264b2160b10025a210a(xy

13、)(xy)255a40a318ab2c10bc6q(y6)20p(y6)8(y6)m(y6)1636a264x24y281y2169(7x5y)2(xy)281144n64n2(xy)28m(xy)16m264m232m44a24a(mn)(mn)215a80ab14a3bc40b410p(y6)40q(y6)6(y6)m(y6)364y232x218y20.09m2100(xy)2(x10y)2100180b81b2(xy)28m(xy)16m29x212x416a28a(mn)(mn)280a100a2abc20b2q(5a)32q(5a)2(5a)m(5a)169x24x2100y20.

14、49a281(x6y)2(2x10y)2100180y81y2(ab)28m(ab)16m29b242b494a24a(xy)(xy)280a430a8ab3c50b4c12p(x4)16q(x4)6(x4)m(x4)491n216x24y20.16b24(9x6y)2(xy)281108b36b2(mn)26m(mn)9m264y2112y4936a212a(xy)(xy)225a70a42a4b2c10b2c8p(y6)4p(y6)8(y6)m(y6)41y218x232y225m249(4xy)2(2x7y)2428n49n2(ab)28m(ab)16m24m240m10025a210a

15、(xy)(xy)270a450a312ab3c100b3c10p(4a)36p(4a)8(4a)m(4a)819x236x264y264a29(x2y)2(xy)264112b49b2(mn)24m(mn)4m216b28b14a24a(ab)(ab)285a480ab2a2bc100b418p(y2)28p(y2)4(y2)m(y2)811n22x250y216m2256(x6y)2(x9y)23624x4x2(xy)26m(xy)9m29m248m6425a210a(xy)(xy)25a50a314a4b3c100bc4q(y8)24p(y8)6(y8)m(y8)164x232x232y2

16、0.09a2169(9xy)2(x8y)2948b64b2(mn)210m(mn)25m29y224y1625a210a(ab)(ab)245a430a12a3b3c40b14p(3b)12q(3b)8(3b)m(3b)981a216x264y20.36m21(xy)2(x7y)225100y100y2(ab)24m(ab)4m249a256a169a26a(xy)(xy)245a210a2b8a3bc50b3c8q(7a)28p(7a)4(7a)m(7a)2536y23x212y20.25b2121(4xy)2(4xy)26496a36a2(mn)212m(mn)36m249b298b493

17、6a212a(xy)(xy)230a90a14ab3c40b4c16q(x5)4p(x5)2(x5)m(x5)1100b24x216y20.81a29(2xy)2(x9y)26464m16m2(xy)24m(xy)4m2100b220b14a24a(xy)(xy)265a480a6a3b3c40bc16q(1b)12p(1b)6(1b)m(1b)10025a264x264y216a2400(xy)2(x7y)2936b36b2(xy)210m(xy)25m2100b240b416a28a(xy)(xy)285a20a310abc10b316p(7a)32p(7a)6(7a)m(7a)259a2

18、2x22y20.64n2100(9x6y)2(xy)28172b16b2(xy)28m(xy)16m249b270b2536a212a(xy)(xy)290a50a48a3b2c70b412q(7a)4p(7a)2(7a)m(7a)10081a216x24y264b2225(3xy)2(9xy)236108b81b2(xy)26m(xy)9m225m290m8116a28a(xy)(xy)225a470ab4a2bc20bc12q(y3)24q(y3)6(y3)m(y3)6436x250x28y249b2196(8x6y)2(5x8y)2100200a100a2(ab)212m(ab)36m2

19、49a228a44a24a(mn)(mn)250a90a38ab2c70b4c12p(4a)24p(4a)4(4a)m(4a)4925b22x232y236x2100(2xy)2(6x9y)2942m49m2(xy)26m(xy)9m281n272n164a24a(ab)(ab)230a60a212a2bc50b18p(x3)20q(x3)4(x3)m(x3)4964n218x22y20.25m2225(xy)2(xy)2948m64m2(xy)28m(xy)16m225m270m499a26a(mn)(mn)290a210a4b10a4b2c90b36p(x3)4q(x3)6(x3)m(x3

20、)1100m24x2100y216m236(6x2y)2(9xy)21680y100y2(xy)28m(xy)16m24a236a814a24a(mn)(mn)260a320a10a3b2c100b2c14p(x2)32p(x2)2(x2)m(x2)1664m216x2100y20.25n225(x5y)2(3xy)22540x16x2(mn)26m(mn)9m264b2112b4925a210a(xy)(xy)2100a2100ab2ab3c50b220q(5a)16q(5a)4(5a)m(5a)8125y2100x2100y20.49b281(xy)2(x7y)23672b36b2(ab)210m(ab)25m281x290x254a24a(ab)(ab)2