初中八年级数学上册因式分解练习题大全72.docx

1、初中八年级数学上册因式分解练习题大全723672m36m2 (ab)24m(ab)4m264n296n36 16a28a(mn)(mn)2x29x14 x27x3012x253x56 4949x2100a220a2 10a4b2c40b4c18q(2b)32q(2b) 4(2b)m(2b)4949n2 32x232y20.25a2361 (xy)2(6xy)2100100m25m2 (ab)28m(ab)16m264y232y4 25a210a(mn)(mn)2x25x6 x22x244x246x90 4100y220a60a 6ab2c10b4p(y8)40q(y8) 6(y8)m(y8)4

2、64m2 50x250y225a2256 (5x3y)2(4x8y)281180n100n2 (ab)212m(ab)36m249n214n1 36a212a(ab)(ab)2x25x4 x27x3015x234x15 6481m290a250a 12a2bc40b2p(6b)8q(6b) 2(6b)m(6b)9100y2 100x2100y20.36a2121 (8xy)2(5x8y)22590x81x2 (mn)28m(mn)16m2100b280b16 9a26a(xy)(xy)2x27x10 x24x458x242x27 644x220a470a2b 16ab2c50bc14p(9b)

3、32q(9b) 2(9b)m(9b)3649a2 75x275y216a21 (6x4y)2(x10y)24984b36b2 (xy)210m(xy)25m264b2160b100 16a28a(mn)(mn)2x24x3 x29x1020x267x56 644y285a290ab 16abc70bc14p(2a)32q(2a) 6(2a)m(2a)644b2 64x2100y29b2289 (9x5y)2(xy)2942m49m2 (mn)26m(mn)9m216n256n49 9a26a(mn)(mn)2x210x25 x25x509x239x40 6425y255a310a 8a2bc6

4、0b3c12p(x6)32p(x6) 2(x6)m(x6)1681m2 2x28y20.49y21 (8xy)2(6xy)23684b49b2 (mn)26m(mn)9m24n212n9 36a212a(mn)(mn)2x27x10 x23x2812x246x20 6436x240a290a4b 10a4bc70b314q(3a)20p(3a) 2(3a)m(3a)481b2 75x248y20.25b2361 (7xy)2(x8y)2100180y81y2 (xy)26m(xy)9m2100a2160a64 4a24a(mn)(mn)2x216x63 x24x125x218x9 49y210

5、a340a2 6ab3c30b4c12p(5a)12p(5a) 2(5a)m(5a)6425y2 27x23y249b2169 (xy)2(7xy)2942m49m2 (xy)210m(xy)25m216a216a4 25a210a(ab)(ab)2x212x35 x22x243x26x3 2549b230a410ab 2ab3c20b18p(4b)16p(4b) 2(4b)m(4b)10016m2 8x22y225m2289 (7x5y)2(9x7y)21624y9y2 (mn)210m(mn)25m225x250x25 25a210a(xy)(xy)2x214x48 x23x182x25x

6、2 9100y265a270a2 20abc10b4c2p(x8)4q(x8) 6(x8)m(x8)1004x2 27x275y29m2169 (4xy)2(5xy)249112n64n2 (xy)210m(xy)25m249y2140y100 4a24a(mn)(mn)2x213x36 x23x185x253x30 1681m220a70a 10a4b2c30b314q(y6)24q(y6) 8(y6)m(y6)425n2 36x236y225b236 (x3y)2(xy)216y9y2 (mn)24m(mn)4m264m280m25 4a24a(xy)(xy)2x212x27 x25x64

7、x210x6 1636m230a80a 14abc50b4c10p(9a)4q(9a) 8(9a)m(9a)936b2 27x248y20.04b2361 (2xy)2(xy)2918m9m2 (mn)210m(mn)25m24n212n9 4a24a(mn)(mn)2x28x7 x23x4010x242x8 1664y240a340a3b 8a3b3c40b4c12q(4a)40q(4a) 6(4a)m(4a)3681n2 2x232y20.49x216 (5xy)2(x8y)264144y81y2 (mn)212m(mn)36m24x224x36 36a212a(ab)(ab)2x211x

8、18 x26x276x232x32 2549y240a20a2 6a2bc70b214q(7b)36q(7b) 6(7b)m(7b)10081y2 32x218y20.64y225 (xy)2(8x7y)281162y81y2 (ab)24m(ab)4m216b224b9 16a28a(xy)(xy)2x210x24 x27x182x222x60 164y215a340a2 14a2b3c60b2c10p(3b)24p(3b) 4(3b)m(3b)6449b2 8x218y20.16m24 (x5y)2(xy)22520b4b2 (xy)28m(xy)16m2100b240b4 16a28a(

9、mn)(mn)2x213x42 x27x185x221x18 499m235a50ab 12a2b2c50b2c18q(3a)16q(3a) 2(3a)m(3a)181n2 75x275y225a236 (3x4y)2(4xy)2116a64a2 (ab)210m(ab)25m225b290b81 25a210a(ab)(ab)2x211x30 x23x189x236x20 1100a220a20a3b 14abc10bc18q(x8)40p(x8) 6(x8)m(x8)10036x2 27x23y20.36b225 (7x2y)2(xy)22560n36n2 (xy)26m(xy)9m210

10、0b2100b25 9a26a(mn)(mn)2x29x18 x24x219x224x15 125y265a470a2b 14abc80bc2p(4a)28p(4a) 2(4a)m(4a)6425a2 27x248y20.49a2324 (xy)2(5x9y)22560b36b2 (mn)28m(mn)16m249n2140n100 4a24a(xy)(xy)2x214x48 x25x3615x262x63 916y230a410a3 6abc90b2c4q(1a)28q(1a) 4(1a)m(1a)369m2 32x28y236b29 (6x2y)2(x9y)21680a100a2 (ab)

11、210m(ab)25m24x28x4 16a28a(ab)(ab)2x213x36 x25x3620x278x70 2525m260a90a 16a3bc70b36p(6b)16q(6b) 2(6b)m(6b)10049n2 64x264y29x264 (xy)2(3xy)264160a100a2 (mn)210m(mn)25m249a270a25 9a26a(xy)(xy)2x211x18 x25x508x256x90 94m230a30ab 10abc100b48p(5b)4p(5b) 6(5b)m(5b)1681x2 100x24y20.81b225 (x6y)2(xy)249112y6

12、4y2 (ab)212m(ab)36m264m216m1 16a28a(mn)(mn)2x214x48 x26x79x236x32 2581n210a70ab 18ab3c70bc12q(y9)12q(y9) 6(y9)m(y9)3664b2 8x218y20.16x2289 (xy)2(4xy)2100140a49a2 (xy)212m(xy)36m29b224b16 36a212a(ab)(ab)2x210x9 x25x364x239x56 6436b2100a220ab 8a2b3c40b18p(5b)12q(5b) 4(5b)m(5b)6464x2 100x24y20.09b2196

13、(xy)2(xy)2416m16m2 (xy)212m(xy)36m264a232a4 9a26a(xy)(xy)2x211x28 x24x124x220x9 8164b250a230a2b 20a3b2c100bc20p(1b)28p(1b) 6(1b)m(1b)44y2 2x22y20.81m2169 (6xy)2(3x9y)2114y49y2 (ab)28m(ab)16m2100b220b1 25a210a(xy)(xy)2x213x36 x26x169x236x32 4925m270a310a4 16abc100b4c2q(y3)24p(y3) 2(y3)m(y3)259b2 2x22

14、y20.81a2324 (x5y)2(x10y)249140m100m2 (mn)28m(mn)16m264y264y16 25a210a(mn)(mn)2x28x15 x26x1616x236x14 436a210a90a3b 18abc10b2c6q(x1)16q(x1) 8(x1)m(x1)2549b2 3x212y225n2256 (x6y)2(9x9y)236108x81x2 (xy)24m(xy)4m225y280y64 9a26a(ab)(ab)2x213x36 x27x85x227x28 149a255a470a4 10a2bc30b3c16q(7a)8p(7a) 2(7a)m

15、(7a)4949a2 32x28y20.81m225 (xy)2(x8y)2948b64b2 (ab)26m(ab)9m216n248n36 25a210a(mn)(mn)2x210x16 x22x359x239x42 116y270a80ab 2abc80b18q(y1)8q(y1) 6(y1)m(y1)254b2 100x236y29a225 (x6y)2(xy)23648y16y2 (ab)26m(ab)9m225a290a81 16a28a(xy)(xy)2x28x12 x23x189x245x50 149n250a4100a 14a2b3c80b14q(1a)28p(1a) 6(1a

16、)m(1a)81100x2 32x22y20.25n21 (x2y)2(x8y)210040y4y2 (ab)24m(ab)4m264m248m9 9a26a(ab)(ab)2x28x16 x25x365x234x24 44n235a410a4 14a3bc50b316p(x6)16p(x6) 2(x6)m(x6)2564b2 4x236y20.09a2169 (xy)2(7x10y)2100140y49y2 (ab)24m(ab)4m264n2144n81 36a212a(xy)(xy)2x210x16 x25x366x234x48 2525n245a90ab 20ab2c80b3c16p(

17、y2)28p(y2) 6(y2)m(y2)4949x2 36x264y264a2169 (xy)2(7x7y)22570a49a2 (ab)210m(ab)25m2100b2180b81 16a28a(mn)(mn)2x25x6 x26x716x28x1 6436x280a370a 20ab2c100b3c16q(8a)24q(8a) 8(8a)m(8a)981m2 18x218y236b2100 (xy)2(x9y)2100140m49m2 (ab)212m(ab)36m216x256x49 25a210a(xy)(xy)2x29x14 x29x1012x234x14 2516m290a70

18、a2b 16abc20b14p(5a)32p(5a) 6(5a)m(5a)964n2 27x23y249y2100 (x6y)2(xy)2936y36y2 (ab)28m(ab)16m29a26a1 4a24a(xy)(xy)2x27x10 x25x616x236x14 2549a225a470a4b 2a3bc70b2c2p(x7)16p(x7) 2(x7)m(x7)2549y2 16x264y20.09m2289 (2xy)2(6xy)24956x16x2 (mn)212m(mn)36m29a230a25 4a24a(mn)(mn)2x27x6 x24x326x217x12 416x225

19、a100a 20a2bc30b36p(x5)20p(x5) 8(x5)m(x5)494x2 4x2100y20.49n2289 (6x6y)2(9x7y)23648x16x2 (xy)24m(xy)4m225b280b64 25a210a(ab)(ab)2x27x12 x24x2116x240x9 814x285a210a3 12ab3c60b4c16q(3b)40q(3b) 6(3b)m(3b)100100y2 16x264y20.81n2144 (2xy)2(x9y)2100100y25y2 (xy)210m(xy)25m236m296m64 9a26a(ab)(ab)2x27x12 x23x2810x227x18 44x210a60a2b 6abc10bc4q(x4)20q(x4) 2(x4)m(x4)416b2 3x248y281y2361 (5xy)2(x10y)2100160x64x2 (xy)26m(xy)9m249a256a16 36a212a(ab)(ab)2x211x18 x24x326x227x21 4949b2