人教版八年级数学上册整式的乘法和因式分解练习题大全20.doc

1、一、计算。(3xy2)2(xy3)3(a4b)(6ab)2x(x5)(x3)(3xy4)280.479.67992(2a)3b310ab(x3y36x3y4z4)x2y23(x3)2(2x5)(4x4)4(yz)2(3yz)(2yz)二、因式分解。x2y2(bp)(4x3y)(bp)(xy)a214am49m2930(pa)25(pa)2d34dx41一、计算。(2x3y)3(xy)3(4ab)(a2b)3x(x1)(x5)(x4y3)290.489.699982(2a)3b220a2b(x3y43x2y3z3)xy3(x1)2(2x2)(4x2)(yz)2(2yz)(3yz)二、因式分解。8

2、1x2100y2(dq)(5x4y)(dq)(x3y)a216an64n2918(mc)9(mc)2c364c16x481一、计算。(3xy)3(x3y)2(a4b)(a3b)2x(x5)(x4)(6x2y2)25.34.750052(7a)2b44ab2(x2y2x3y2z3)8xy2(x3)2(4x5)(2x3)2(yz)2(4yz)(4yz)二、因式分解。x249y2(aq)(4x2y)(aq)(3xy)a214ay49y23648(pa)16(pa)2c325cx41一、计算。(2xy)2(xy3)2(4a4b)(4ab)3x(x2)(x3)(3x6y2)28.27.87022(4a)

3、2b412ab(7x4y23x4y4z3)4x2y4(x1)2(2x4)(2x1)(yz)2(4yz)(4yz)二、因式分解。81x2y2(cp)(6xy)(cp)(2xy)a220ay100y21624(dp)9(dp)2d349dx416一、计算。(3xy)2(x3y)2(3a2b)(4a2b)2x(x3)(x1)(xy2)28.37.72002(9a)2b214ab(6x2y3x3y2z3)xy2(x2)2(2x1)(4x4)(yz)2(2yz)(3yz)二、因式分解。16x2y2(qa)(xy)(qa)(4xy)a220an100n2416(qd)16(qd)2c3100c81x41一

4、、计算。(3x3y)2(xy)2(6a3b)(ab)3x(x2)(x5)(x4y2)250.349.750052(9a)2b310a2b(x2y45x3y2z2)8xy2(x3)2(2x2)(4x2)(yz)2(4yz)(3yz)二、因式分解。x2y2(pb)(x5y)(pb)(xy)a28ax16x2918(nb)9(nb)2c336c16x41一、计算。(3xy2)2(x2y)3(a2b)(5ab)3x(x3)(x3)(3xy4)270.469.610032(8a)3b414a2b(x4y3x2y4z4)3xy22(x3)2(2x1)(4x3)3(yz)2(2yz)(3yz)二、因式分解。

5、81x2y2(qc)(xy)(qc)(xy)a218ay81y2942(pd)49(pd)2d336dx41一、计算。(3xy)3(x2y2)3(ab)(5a2b)3x(x1)(x3)(xy4)210.49.63992(8a)3b34a2b(6x4y2x4y3z3)5x2y4(x1)2(3x1)(2x3)(yz)2(2yz)(3yz)二、因式分解。49x2y2(cm)(xy)(cm)(4x2y)a212ax36x21656(nc)49(nc)2b364b16x481一、计算。(2xy)3(xy3)2(a4b)(a6b)3x(x2)(x3)(4xy4)210.19.960042(4a)2b418

6、ab2(x4y4x3y4z2)x2y(x4)2(4x1)(4x4)(yz)2(2yz)(3yz)二、因式分解。16x2y2(nb)(2xy)(nb)(x3y)a26am9m2428(pb)49(pb)2b349bx481一、计算。(3x2y)3(xy3)3(a6b)(a2b)2x(x4)(x5)(2x2y4)29.18.98022(4a)3b310a2b(x3y25x2y3z2)x2y2(x2)2(4x1)(4x5)4(yz)2(3yz)(4yz)二、因式分解。x2y2(qd)(x6y)(qd)(x4y)a210ab25b21656(bp)49(bp)2d34dx4256一、计算。(2xy)2

7、(x3y)2(6a6b)(ab)3x(x5)(x1)(5xy2)21.10.99962(8a)3b22ab(x2y46x4y3z3)3xy(x4)2(4x5)(3x2)4(yz)2(4yz)(4yz)二、因式分解。x29y2(pc)(x4y)(pc)(6xy)a216am64m21624(an)9(an)2a34a81x481一、计算。(2xy)2(xy2)2(a3b)(5a5b)3x(x5)(x1)(xy1)230.229.85032(9a)2b216a2b(x2y4x4y2z2)x2y(x3)2(2x1)(3x5)2(yz)2(4yz)(3yz)二、因式分解。x264y2(dp)(5xy)

8、(dp)(x5y)a210am25m22540(bm)16(bm)2a364ax4256一、计算。(2x2y)3(xy)3(a2b)(4a6b)2x(x2)(x4)(xy2)210.19.91012(5a)2b38ab2(x4y22x2y3z3)xy(x2)2(2x1)(3x3)2(yz)2(2yz)(3yz)二、因式分解。x2y2(am)(xy)(am)(5x5y)a28an16n2416(bp)16(bp)2c364c81x41一、计算。(3xy)2(xy)3(6ab)(a4b)2x(x3)(x3)(5x5y1)260.159.9100002(2a)3b36a2b(x4y3x2y2z2)x

9、y2(x2)2(2x5)(2x4)(yz)2(4yz)(3yz)二、因式分解。x264y2(cm)(x5y)(cm)(5x4y)a212am36m2412(mb)9(mb)2a381a81x416一、计算。(3xy)2(xy)2(ab)(a2b)3x(x5)(x2)(xy2)21.40.619962(4a)3b214ab(x2y4x3y4z2)9xy22(x2)2(3x4)(2x1)(yz)2(3yz)(2yz)二、因式分解。64x236y2(ap)(xy)(ap)(xy)a24ax4x21624(bm)9(bm)2c34cx481一、计算。(2xy3)3(x3y2)2(4a4b)(6ab)2

10、x(x1)(x3)(5xy4)22.21.880022(9a)3b220a2b(7x4y26x2y3z4)xy24(x4)2(3x2)(4x2)(yz)2(4yz)(4yz)二、因式分解。64x2100y2(nb)(xy)(nb)(xy)a218am81m2912(qd)4(qd)2c336cx41一、计算。(2xy)2(x3y3)3(ab)(3a4b)3x(x2)(x4)(4x2y1)270.369.790042(9a)2b212ab2(x3y24x4y2z2)xy23(x4)2(2x2)(2x1)(yz)2(3yz)(4yz)二、因式分解。x249y2(nd)(3x5y)(nd)(xy)a

11、210am25m2942(qa)49(qa)2d325d16x481一、计算。(3x3y)2(x2y)2(a2b)(5ab)3x(x1)(x2)(x5y3)280.179.989972(3a)3b318a2b2(3x4y2x4y3z4)xy22(x1)2(2x5)(2x1)4(yz)2(4yz)(3yz)二、因式分解。x2y2(bm)(6x2y)(bm)(6x4y)a28ax16x23636(ma)9(ma)2c336cx4256一、计算。(2xy)3(x2y2)2(6ab)(4ab)2x(x5)(x3)(5xy2)27.36.790002(7a)3b210ab(x4y39x2y2z4)xy2

12、2(x4)2(2x2)(2x1)3(yz)2(2yz)(4yz)二、因式分解。4x225y2(pd)(xy)(pd)(x3y)a218ab81b2942(qd)49(qd)2c34c16x481一、计算。(3xy3)2(xy2)3(4a3b)(ab)2x(x2)(x3)(6x3y2)250.449.629952(5a)2b310ab(x4y4x3y3z4)3xy2(x1)2(3x2)(4x3)(yz)2(4yz)(3yz)二、因式分解。16x249y2(pb)(x3y)(pb)(x3y)a220ay100y22560(bm)36(bm)2d336d81x41一、计算。(2x3y)3(x3y)3

13、(a4b)(5a4b)3x(x2)(x3)(x2y2)290.289.850042(7a)2b48a2b2(6x2y43x4y2z4)5xy23(x1)2(4x1)(4x4)(yz)2(3yz)(3yz)二、因式分解。x2y2(pb)(xy)(pb)(xy)a212ab36b2942(bq)49(bq)2d364dx481一、计算。(3x2y)3(x2y)3(a3b)(a3b)3x(x1)(x4)(xy2)29.28.820052(8a)3b410a2b2(5x3y37x3y2z3)x2y(x4)2(2x3)(4x3)4(yz)2(2yz)(4yz)二、因式分解。x236y2(pb)(xy)(

14、pb)(2xy)a28ab16b2912(bm)4(bm)2c336c81x4256一、计算。(2x2y2)3(xy)2(a3b)(a3b)2x(x3)(x2)(5xy2)21.20.899952(5a)3b218ab2(x4y45x3y2z3)8x2y4(x2)2(3x1)(4x5)3(yz)2(4yz)(2yz)二、因式分解。9x264y2(pc)(xy)(pc)(x4y)a210ab25b248(na)4(na)2b39bx4256一、计算。(2xy)2(x3y3)3(3ab)(ab)3x(x4)(x3)(x6y2)230.329.79002(3a)3b216ab2(8x4y39x3y3z2)xy2(x1)2(4x2)(4x3)2(yz)2(4yz)(3yz)二、因式分解。x225y2(dn)(x4y)(dn)(3x4y)a220ay100y2416(na)16(na)2a39ax481一、计算。(3xy3)2(xy)3(ab)(a2b)3x(x3)(x4)(x5y4)23.12.949982(9a)2b22a2b2(6x3y43x4y4z3)8xy(x4)2(4x2)(2x5)(yz)2(2yz)(2yz)二、因式分解。x2100y2(nb)(x6y)(nb)(4xy)a210ay25y21640(cq)25(cq)2d381dx481