整式的除法专题训练
- 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
整式的除法专题训练
(一)填空
1.4x4y2÷(-2xy)2=______.
3.2(-a2)3÷a3=______.4.______÷5x2y=5xy2.5.y m+2n+6=y m+2·______.
6.______÷(-5my2z)=-m2y3z4.7.(16a3-24a2)÷(-8a2)=______.
8.(m+n)2(m-n)÷(m+n)2=______.
10.(-8x4y+12x3y2-4x2y3)÷(4x2y)=______.
11.(a+b)(a-b)(a4+a2b2+b4)÷(b6-a6)=______.
12.(a3+2a2+a+1)÷(a2+a-1)的余式是______.
13.(6x6-4x5+2x4-x-5)÷(2x4-x-3),则商式为______,余式为______.
14.用A表示一个多项式,如果A(x2+xy+y2)=x3-y3,那么A=______.
15.已知a≠b,且a(a+2)=b(b+2),则a+b的值是______.
16.6x6-6x5+3x4+6x3+10x2-8x+1=(6x4-4x+2)×(______)+(______).
17.多项式2x3+6x2+6x+5除以一个多项式A,商为x+1,余式5x+8,那么除式A为______.18.(2m3+bm2+2m+2)÷(m2+m-1)的余式是2m+4,则b=______.
19.已知(3x3+nx+20)÷(x2+2x-3)所得余式为3x+2,则n=______.
20.如果4x3+9x2+mx+n能被x2+2x-3整除,则m=______,n=______.
21.x3+4x2+5x+2用整式______除,则商式和余式都是x+1.
22.已知(3x3+nx+m)÷(x2+2x-3)所得余式为3x+2,则m=______,n=______.
23.已知x2-3x-2=0,则-x3+11x+6=______.
(二)选择
24.21a8÷7a2= [ ]
A.7a4;B.3a6;C.3a10;D.3a16.
25.x9y3÷6y2= [ ]
A.x3y;B.x3y3;C.x3y2;D.x3.
26.28a4b2÷7a3b= [ ]
A.4ab2;B.4a4b;C.4a4b2;D.4ab.
[ ]
A.8xyz;B.-8xyz;C.2xyz;D.8xy2z2.
28.25a3b2÷5(ab)2= [ ]
A.a;B.5a;C.5a2b;D.5a2.
29.正确地进行整式运算可得 [ ]
A.2x+3y=5xy;B.4x3y-5xy3=-xy;C.3x3·2x2=6x6;D.4x4y3÷(-2xy3)=-2x3.30.下列计算正确的[ ]
A.a m a n=a2m;B.(a3)2=a5;C.a3m-5÷a5-m=a4m-10;D.x3x4x5=x60.31.下列计算错误的是 [ ]
A.(x4)4=x16;B.a5a6÷(a5)2÷a=a2;C.(-a)(-a2)+a3+2a2(-a)=0;D.(x5)2+x2x3+(-x2)5=x5.32.(x4y+6x3y2-x2y3)÷3x2y= [ ]
A.x2+2xy-y2;
[ ]
34.下列整式除法正确的是 [ ]
A.(3x2y3+6x2y2)÷3xy2=xy+2xy;B.(5a2b4-25a3)÷(-5b4)=-a2+5a3b4;
C.(2x2-5x-3)÷(x-3)=2x+1;D.(a+b)4(a-b)÷2(a+b)(a2-b2)=2(a+b)2×(a-b).35.(2x3-5x2+3x-2)÷(-x+1+2x2)= [ ]
A.x+1;B.x-1;C.x+2;D.x-2.
36.(x2+2xy-8y2+2x+14y-3)÷(x-2y+3)= [ ]
A.x-4y-1;B.x+4y+1;C.x+y;D.x+4y-1.
37.(x3+2x2+x+1)÷(x2+x-1)的余式是 [ ]
A.x+1;B.x-1;C.x+2;D.x-2.
38.(1+x+2x2+x3)÷(x2+x-1)的余式是 [ ] A.x+1;
B.x+2;
C.x-1;
D.x-2.
39.除式=6x2+3x-5,商式=4x-5,余式=-8,则被除式为 [ ]
A.(6x2+3x-5)(4x-5)+8;
B.(6x2+3x-5)÷(4x-5)-8;
C.(6x2+3x-5)+(4x-5)×(-8);
D.(6x2+3x-5)(4x-5)-8.
40.(x3-2x2+ax+2)÷(x2-4x+1)=x+2,则 [ ] A.a=-7;
B.a=7;
C.a=7x;
D.a=-7x.
41.(x3-3x2-9x+23)=(x2-x-11)·N+1,则N= [ ] A.x-2;
B.x+2;
C.-x-2;
D.-x+2.
42.若x3-3x2+ax+b能被x-2整除,则 [ ] A.a=9,b=22;
B.a=9,b=-22;
C.a=-9,b=22;
D.a=-9,b=-22.
43.9x4-6x2y2+y4=(3x2-y2)·M,则M= [ ] A.3x2+y2;
B.(3x)2-y2;
C.(3x)2+y2;
D.3x2-y2.
44.如果4x3+9x2+mx+n能被x2+2x-3整除,则 [ ] A.m=10,n=3;
B.m=-10,n=3;
C.m=-10,n=-3;
D.m=10,n=-3.
45.(3x-4x2+x4-4)=M·(x2+2x-1)+(-x-3),则M为 [ ] A.x2+2x+1;
B.x2-2x+1;
C.-x2+2x+1;
D.x2+2x-1.
46.多项式x2+x+m能被x+5整除,则此多项式也能被下述多项式整除的是 [ ] A.x-6;
B.x+6;
C.x-4;
D.x+4.
47.3x4-2x3-32x2+66x+m能被x2+2x-7整除,则m为 [ ] A.35;
B.-32;
C.-35;
D.32.
(三)计算
48.-3(ab)2·(3a)2·(-ab)3÷(12a3b2).