1、初中八年级数学上册因式分解练习题大全701648m36m2 (mn)28m(mn)16m249x256x16 16a28a(mn)(mn)2x215x56 x23x2815x266x63 649x265a460a 16a4b3c20b12p(1b)8p(1b) 8(1b)m(1b)4949m2 8x250y281y2100 (x5y)2(7xy)21680y100y2 (mn)210m(mn)25m24y228y49 9a26a(ab)(ab)2x29x14 x25x503x222x7 981b290a90a 12abc20bc8q(6b)36p(6b) 4(6b)m(6b)1009n2 18
2、x218y24m21 (xy)2(xy)2960b100b2 (ab)210m(ab)25m249x2140x100 4a24a(mn)(mn)2x211x18 x27x88x222x5 494n220a240a2b 4ab2c100b10p(9a)32p(9a) 4(9a)m(9a)10036y2 16x236y281b281 (x5y)2(x8y)21632m16m2 (xy)24m(xy)4m29n236n36 25a210a(mn)(mn)2x213x40 x23x1820x258x42 81100n225a40ab 8a2b3c30b14p(x1)4q(x1) 2(x1)m(x1)6
3、416y2 2x218y236m236 (5x6y)2(5x9y)2114m49m2 (xy)212m(xy)36m2100b2180b81 36a212a(ab)(ab)2x210x16 x24x453x240x100 8136b2100a310a2 8a3b2c30b10q(5b)8p(5b) 2(5b)m(5b)6449b2 36x2100y24y2144 (4xy)2(x10y)2416y16y2 (mn)28m(mn)16m281x2126x49 36a212a(ab)(ab)2x210x24 x26x274x228x40 1009x260a30a4b 8a2bc90bc18p(2b
4、)4p(2b) 8(2b)m(2b)3681m2 8x250y20.64b216 (8x2y)2(xy)281162b81b2 (mn)210m(mn)25m29b236b36 4a24a(xy)(xy)2x210x24 x25x368x246x30 19b285a240a4 6abc70bc16p(x5)20q(x5) 6(x5)m(x5)1004x2 8x28y20.25b2225 (4xy)2(9x7y)249112x64x2 (ab)210m(ab)25m249x2126x81 16a28a(mn)(mn)2x214x48 x28x96x238x40 4100a265a80ab 18a
5、bc100bc6q(x8)40p(x8) 4(x8)m(x8)949a2 32x232y236a2121 (xy)2(4xy)26496b36b2 (xy)26m(xy)9m225a230a9 25a210a(mn)(mn)2x211x28 x27x183x211x8 3681n230a3100a3 18a2bc40b3c2q(7a)4q(7a) 6(7a)m(7a)259y2 18x28y20.64a216 (9x2y)2(3x7y)264160b100b2 (xy)212m(xy)36m24b28b4 4a24a(mn)(mn)2x27x12 x24x214x245x50 10036x21
6、0a430ab 14ab3c60b12p(y1)8q(y1) 6(y1)m(y1)254n2 48x23y20.49m236 (5x3y)2(x7y)28172a16a2 (xy)210m(xy)25m236n224n4 36a212a(ab)(ab)2x29x8 x25x246x248x90 2516b250a70a3b 6ab3c60b212p(1b)16p(1b) 8(1b)m(1b)449b2 100x216y264m24 (x3y)2(9xy)2110x25x2 (ab)24m(ab)4m249m256m16 25a210a(ab)(ab)2x25x6 x22x3510x218x8
7、1625y285a490a4b 14abc80b418p(y9)16q(y9) 4(y9)m(y9)449x2 3x212y225b2144 (7xy)2(2xy)2948a64a2 (mn)212m(mn)36m225n2100n100 16a28a(ab)(ab)2x210x16 x26x278x246x45 8181m295a40a4 14a3b3c20bc14q(4b)28p(4b) 8(4b)m(4b)1625b2 50x232y24a2225 (x3y)2(x10y)2924b16b2 (xy)28m(xy)16m249a298a49 4a24a(mn)(mn)2x27x10 x2
8、6x4020x265x50 425m210a70a 12a3bc90b416q(4a)4p(4a) 4(4a)m(4a)44y2 100x24y20.25m24 (xy)2(x8y)21632x16x2 (mn)24m(mn)4m249a2140a100 4a24a(mn)(mn)2x211x30 x26x162x218x40 1625m265a80a3 10a2bc20b3c20q(y9)40q(y9) 6(y9)m(y9)936b2 32x28y225a2256 (x3y)2(xy)218n16n2 (xy)26m(xy)9m24x212x9 16a28a(ab)(ab)2x215x54
9、x22x356x240x64 44y280a10ab 14a2bc20b2c20p(y5)36q(y5) 2(y5)m(y5)164y2 48x275y20.16x225 (x3y)2(6xy)225100b100b2 (ab)24m(ab)4m2100y2120y36 4a24a(mn)(mn)2x217x72 x23x1810x223x9 964a25a100a2b 8ab3c50b412p(x1)4q(x1) 2(x1)m(x1)649n2 100x24y20.49y225 (xy)2(7x9y)218b16b2 (xy)210m(xy)25m216m240m25 36a212a(mn)
10、(mn)2x211x18 x22x358x212x4 10025y260a100a3b 2a3b3c100bc12q(x3)32q(x3) 6(x3)m(x3)2564x2 64x236y236n216 (6x2y)2(4x7y)2100200n100n2 (mn)28m(mn)16m264a2128a64 16a28a(mn)(mn)2x27x6 x23x4010x244x16 2525a25a3100a 4ab2c70bc18p(x7)20q(x7) 2(x7)m(x7)19a2 12x275y20.49m2121 (xy)2(x8y)281126m49m2 (ab)24m(ab)4m23
11、6n224n4 4a24a(ab)(ab)2x215x56 x23x1810x235x25 14m275a70a2 14ab2c90bc14q(x1)16p(x1) 6(x1)m(x1)2516m2 12x227y20.25n249 (7x3y)2(3xy)22540m16m2 (xy)28m(xy)16m264m248m9 16a28a(xy)(xy)2x26x8 x25x63x222x35 644y250a20ab 20a4bc100bc2q(4a)4q(4a) 8(4a)m(4a)36100m2 16x264y20.36b2324 (xy)2(x7y)2412y9y2 (mn)24m(m
12、n)4m225n230n9 36a212a(mn)(mn)2x213x40 x24x3215x246x16 6416b225a460a 2a2b3c50b4c4q(3b)28p(3b) 8(3b)m(3b)464n2 3x227y20.09x2225 (xy)2(xy)21624n9n2 (ab)210m(ab)25m2100a260a9 9a26a(mn)(mn)2x215x56 x26x2712x246x42 1649b270a30a 2abc20b314q(y7)28p(y7) 2(y7)m(y7)481y2 3x227y20.49b24 (xy)2(x10y)28190n25n2 (a
13、b)24m(ab)4m281x236x4 16a28a(ab)(ab)2x210x21 x28x95x251x54 4916n270a420a4b 8ab3c10bc18p(8a)32p(8a) 6(8a)m(8a)10081m2 32x218y20.49m2169 (x2y)2(x7y)2100180y81y2 (mn)210m(mn)25m24b28b4 25a210a(mn)(mn)2x29x14 x26x1610x257x54 1004a25a2100ab 10a3bc70b8p(3b)8p(3b) 6(3b)m(3b)8125n2 18x28y225b2225 (9x3y)2(x9y
14、)23660n25n2 (xy)26m(xy)9m29n260n100 9a26a(xy)(xy)2x213x40 x25x369x257x90 10081n235a90a2b 2ab3c50b34q(x9)28p(x9) 2(x9)m(x9)4981a2 36x236y20.04y2361 (x4y)2(2xy)22540b16b2 (ab)28m(ab)16m236y224y4 25a210a(xy)(xy)2x29x8 x21x305x251x10 819a235a30a4b 4a2bc30bc4p(x7)20q(x7) 8(x7)m(x7)4916x2 36x24y20.49x2100
15、 (7xy)2(8x8y)2918x9x2 (xy)26m(xy)9m264a264a16 36a212a(mn)(mn)2x214x49 x29x108x224x16 449m235a470ab 18a2bc20b414q(y9)36p(y9) 2(y9)m(y9)4100n2 3x23y216n225 (xy)2(xy)21656n49n2 (mn)28m(mn)16m29n260n100 25a210a(mn)(mn)2x24x3 x22x2410x262x60 9100n280a90a 16ab2c90b4q(y6)32p(y6) 2(y6)m(y6)44x2 3x227y24x264
16、 (5xy)2(5x8y)2428n49n2 (xy)28m(xy)16m264x280x25 9a26a(xy)(xy)2x214x45 x23x1820x252x32 136m25a490a 16ab2c60bc8q(x1)28q(x1) 2(x1)m(x1)416a2 64x236y29b2225 (x5y)2(6x10y)2416n16n2 (xy)24m(xy)4m249n228n4 25a210a(mn)(mn)2x210x21 x26x164x222x30 10064b210a2100a 18ab3c50b3c16q(y2)4q(y2) 8(y2)m(y2)2581m2 3x23
17、y264y216 (2x4y)2(x7y)23660n25n2 (xy)212m(xy)36m225x280x64 25a210a(mn)(mn)2x211x28 x25x368x236x16 10025a220a390ab 8a3b3c60b214q(1b)32p(1b) 6(1b)m(1b)10064m2 27x248y20.09y21 (9xy)2(xy)281126m49m2 (ab)24m(ab)4m29y242y49 25a210a(ab)(ab)2x213x40 x25x368x240x50 814m230a30ab 20abc30b3c14p(2b)36p(2b) 2(2b)m
18、(2b)449n2 64x2100y20.16n2225 (4xy)2(xy)2412x9x2 (mn)28m(mn)16m264y280y25 4a24a(mn)(mn)2x28x7 x23x1816x236x18 644n25a20ab 8a4b3c30b4c2q(6a)4p(6a) 6(6a)m(6a)6481m2 32x232y20.36b29 (8xy)2(6x9y)21664y64y2 (ab)26m(ab)9m2100x280x16 16a28a(mn)(mn)2x29x14 x25x244x217x4 3649b260a490a4 10a2b2c90b2c14p(7a)20p(
19、7a) 6(7a)m(7a)149m2 75x275y249a2289 (5xy)2(4x9y)28172x16x2 (xy)210m(xy)25m249y2126y81 36a212a(xy)(xy)2x217x72 x29x1010x253x63 8181b215a270a2b 16a2b2c100b3c2p(y2)36p(y2) 4(y2)m(y2)4949y2 8x28y20.04n2289 (2x3y)2(x9y)26432m4m2 (ab)28m(ab)16m24a28a4 36a212a(ab)(ab)2x211x30 x27x3020x271x63 4100y25a330ab 4ab3c70b20p(x1)4q(x1) 4(x1)m(x1)949m2 36x24y20.25y21 (3x5y)2(x10y)2420y25y2 (ab)210m(ab)25m216b264b64 16a28a(xy)(xy)2x26x9 x23x1810x224x8 3625x2
