1、141 整式的乘法 综合计算题含答案 整式的乘法 计算80道(含答案)14.1.1 同底数幂的乘法14.1.2幂的乘方14.1.3积的乘方14.1.4 整式的乘法(1)单项式乘单项式 (2)多项式乘以多项式(3)同底数幂的除法【公式回顾】1.同底数幂的乘法:(为正整数);同底数幂相乘,底数不变,指数相加.2.幂的乘方: (为正整数);幂的乘方,底数不变,指数相乘.3.积的乘方: (为正整数);积的乘方,等于各因数乘方的积.4.同底数幂的除法:(0, 为正整数,并且).同底数幂相除,底数不变,指数相减.5.单项式乘以单项式:单项式与单项式相乘,把他们的系数,相同字母分别相乘,对于只在一个单项式里
2、含有的字母,则连同它的指数作为积的一个因式.6.单项式乘以多项式:单项式与多项式相乘,就是用单项式去乘多项式的每一项,再把所得的积相加.即(都是单项式).7.多项式乘以多项式:多项式与多项式相乘,先用一个多项式的每一项乘另一个多项式的每一项,再把所得的积相加.即.8.单项式相除:把系数、相同字母的幂分别相除作为商的因式,对于只在被除式里出现的字母,则连同它的指数一起作为商的一个因式.9.多项式除以单项式:先把这个多项式的每一项分别除以单项式,再把所得的商相加.即:计算练习:(1)y4y3y2y; (2)(x2y3)4; (3)82019(0.125)2019; (4)(a3)2(2ab2)3
3、(5)(x3y2)3 (6)5a2(3a3)2(7)(2anb3n)2+(a2b6)n; (8)(mn)2(nm)3(nm)4 (9) 210041000.12599 (10)a3a4a+(a2)4+(2a4)2 (11)(2x2)3+x4x2+(2x2)3 (12)xx3+x2x2 (13)(3x3)2(x2)3+(2x)2(x)3 (14)(b2n)3(b3)4n(b5)n+1(15)(a2)3a3a3+(2a3)2; (16)(4am+1)32(2am)2a(17)8a(a2+a+); (18)5x2y(2xy2)3 (19)7x4x5(x)7+5(x4)4(20)(1)0+(1)202
4、0; (21)(10a25a)(5a) (22)(14a37a2)(7a);(23)(a+b)(a2ab+b2) (24)3x2y(2x3y2)2; (25)(2a2)(3ab25ab3)(26)a5a3a2; (27)(2m)3(m3)2; (28)(2a2b)(abc);(29)(2x)3(2x3x1)2x(2x3+4x2) (30)(x+3)(x7)x(x1)(31)2xy2(3xy4) (32)(y33y2+y)y (33)(2y3)2+(4y2)3(2y)2(3y2)2(34)an5(an+1b3m2)2+(an1bm2)3(b3m+2) (35)(2xy2)6+(3x2y4)3;(
5、36)x2(x)3+3x3(x)24(x)(x4) (37)b2(b)2(b3)(38)(xy)3(y2)2(y2)5 (39)a4a3a+(a2)4(2a4)2(40)(a2b2)3(ab3)2 (41)5x2x4(2x3)2+x8x2 (42)(43)(x1)(2x+1)2(x5)(x+2) (44)3x3y3(x2y2)+(x2y)39xy2(45)(3a2b)2(a2)4(b2)5 (46)2(ab)32+(ab)23(ab)2(47)x2y3(2xy3)2 (48)(3m2+15m3nm4)(3m2) (49)(2x3y43x3y2z)x2y2(50)(xy)(x2+xy+y2) (
6、51)(x2)323(x2x3x)2; (52)3a(a2+2a)2a2(a3)(53)(x2y3)2+(xy)3xy3 (54)(55)x(x)(x)4 (56)yx5+(2x2)2+(2x2)3 (57)y4+(y2)4y4(y2)2(58)(xy)2(yx)7(xy)3 (59)(2102)4 (60)xx2x3+(x2)32(x3)2;(61)(a2)33a2aa3 (62)(xy)9(yx)6(xy)(63)2x6(x)28x5+(2x4)3(x)5 (64)(2x3y)2(2x)(65)(4)2012(0.25)2013(66)若3m6,9n2,求3m4n+1的值 (67)(x3y
7、)(6x);(68)(6x48x2y)(2x2) (69)(1+3x)(3x1); (70)(x+1)2(13x)(1+3x)(71)已知(ax)ya6,(ax)2aya3 (1)求xy和2xy的值; (2)求4x2+y2的值(72)15mn25mnm3n; (73)(3x+1)(2x5) (74)(75)(x3y)(3xy2)3(x)2(76)(x2y)(x+2y1)+4y2 (77)(a2b)(ab2)2+(2ab)3+3a2(78)(a3b4)2(ab2)3; (79)(2x3y23x2y2+2xy)2xy (80)(2a2)3+2a2a4;(81)(2105)2(8105)整式的乘法
8、计算80道参考答案与试题解析(1)原式y10;(2)原式x8y12;(3)原式(0.1258)20191;(4)原式a68a3b68a9b6(5)(x3y2)3x9y6;(6)原式5a29a645a8;(7)原式4a2nb6n+a2nb6n5a2nb6n;(8)(mn)2(nm)3(nm)4(nm)2+3+4,(nm)9;(9)原式299249940.12599(240.125)9924199241248(10)a3a4a+(a2)4+(2a4)2a8+a8+4a86a8(11)原式8x6+x68x6x6;(12)原式x4+x42x4;(13)原式9x6(x6)+4x2(x3)9x6+x6+4
9、x2+x310x6+x3+4x2(14)(b2n)3(b3)4n(b5)n+1b6nb12nb5n+5b6n+12n5n5b13n5;(15)(a2)3a3a3+(2a3)2 a6a6+4a64a6;(16)(4am+1)32(2am)2a64a3m+38a2m+18am+2(17)8a(a2+a+)8aa2+8aa+8a8a3+6a2+5a;(18)原式5x2y(8x3y6)40x5y7;(19)原式7x4x5(x7)+5x167x16+5x162x16(20)(1)0+(1)20201+12;(21)(10a25a)(5a)2a1(22)(14a37a2)(7a)14a37a7a27a2a
10、2a;(23)(a+b)(a2ab+b2)a3a2b+ab2+ba2ab2+b3a3+b3(24)3x2y(2x3y2)23x2y4x6y412x8y5;(25)(2a2)(3ab25ab3)(2a2)(3ab2)(2a2)(5ab3)6a3b2+10a3b3(26)a5a3a2a5+32a6;(27)(2m)3(m3)28m3m6;(28)(2a2b)(abc)a3b2c(29)原式16x6+4x4+8x34x48x316x6;(30)原式x27x+3x21x2+x3x21(31)原式6x2y6;(32)原式y2y+1;(33)(2y3)2+(4y2)3(2y)2(3y2)24y664y64
11、y2(9y4)4y664y636y696y6(34)原式an5(a2n+2b6m4)+a3n3b3m6(b3m+2),a3n3b6m4+a3n3(b6m4),a3n3b6m4a3n3b6m4,0(35)(2xy2)6+(3x2y4)364x6y1227x6y1237x6y12;(36)x2(x)3+3x3(x)24(x)(x4)x5+3x54x50(37)b2(b)2(b3)b2b2b3b7;(38)(xy)3(y2)2(y2)5(xy)3(y2)7(39)原式a8+a84a8,4a8;(40)原式a6b6a2b6a4(41)原式5x64x6+x62x6(42)4x5y3+9x4y22x2y;
12、(43)(x1)(2x+1)2(x5)(x+2)2x2+x2x12(x2+2x5x10)2x2x12x2+6x+205x+19(44)原式3x3y3(x2y2)+(x6y3)9xy22x5y5x7y5(45)原式9a4b2a8(b10)9a4b2a8b109a12b12(46)原式4(ab)6+(ab)6+(ab)25(ab)6+(ab)2(47)x2y3(2xy3)2x2y3(4x2y6)4x4y9;(48)(3m2+15m3nm4)(3m2)15mn+m2(49)(2x3y43x3y2z)x2y22xy23xz;(50)(xy)(x2+xy+y2)x3+x2y+xy2x2yxy2y3x3y
13、3(51)原式(x6)23(x6)2x123x122x12;(52)原式3a3+6a22a3+6a2a3+12a2(53)(x2y3)2+(xy)3xy3x4y6x4y60;(54)(0.25)15415+(0.254)15+1+(1)1(55)原式x2x4x6;(56)原式x5y+4x48x6(57)y4+(y2)4y4(y2)2y4+y8y4y4y4+y4y4y4;(58)(xy)2(yx)7(xy)3(yx)2(yx)7(yx)3(yx)12(59)(2102)41.6109;(60)原式x6+x62x60; (61)(a2)33a2aa3a63a64a6(62)原式(xy)9(xy)6
14、(xy)(xy)2x22xy+y2;(63)原式2x68x5+(8x12)(x5)2x62x78x72x610x7(64)(2x3y)2(2x)(4x6y2)(2x)8x7y2(65)(4)2012(0.25)2013(4)2012(0.25)2012(0.25)(40.25)20120.25(1)20120.2510.250.25(66)9n(32)n32n23 m4n+13m34n33m(32n)23643 (67)原式6x2+18xy;(68)原式3x2+4y(69)原式(1)2(3x)219x2;(70)原式x2+2x+1(19x2)x2+2x+11+9x210x2+2x(71)(1)
15、(ax)ya6,(ax)2aya3axya6,a2xaya2xya3,xy6,2xy3(2)4x2+y2(2xy)2+4xy32+469+2433(72)15mn25mnm3n3nm3n3m3n2;(73)(3x+1)(2x5)6x215x+2x56x213x5(74)(x2yxy2)(xy)2(x2yxy2)x2y2x4y3x3y4(75)原式x3y(27x3y6)x2x8y7(76)原式(x2y)(x+2y)x+2y+4y2x24y2x+2y+4y2x2x+2y;(77)原式a2b(a2b4+8a3b3+3a2)a4b5+8a5b4+3a4b(78)(a3b4)2(ab2)3a6b8a3b6a3b2;(79)(2x3y23x2y2+2xy)2xyx2yxy+1(80)(2a2)3+2a2a4(2)3 (a2)3+2a68a6+2a66a6;(81)(2105)2(8105)41010(8105)40109(8105)5104
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