《整式的除法》习题一、选择题:1.23()(3)4abcab等于()A.294acB.14acC.94abD.214ac2.(8x6y2+12x4y-4x2)÷(-4x2)的结果是()A.-2x3y2-3x2yB.-2x3y2-3x2y+1C.-2x4y2-3x2y+1D.2x3y3+3x2y-13.化简2222()()abab的结果是()A.22abB.2()abC.22abD.2()ab4.当a=43时,代数式(28a3-28a2+7a)÷7a的值是________.A.425B.41C.-49D.-45.下列计算,结算正确的是()A.(a-b)3÷(b-a)2=b-aB.(a+b)5÷(a+b)3=a2+b2C.(b-a)5÷(a-b)3=(a-b)2=a2-2ab2D.(x-y)n+1÷(x-y)n-1=x2-2xy+y26.(0.75a2b3-53ab2+21ab)÷(-0.5ab)等于________.A.-1.5ab2+1.2b-1B.-0.375ab2+0.3b-0.25C.-1.5ab2+1.2bD.23ab2-1.2b+17.下列运算中①43(3)(3)3xxx②623623aaa③863322()ababab④24228(2)2nnxyxyx;其中错误的个数有()A.1个B.2个C.3个D.4个8.下列计算,结果正确的是()A.8x6÷2x2=4x3B.10x6÷5x3=x3C.(-2x2y2)3÷(-xy)3=-2x3y3D.(-xy2)2÷(-x2y)=-y39.若xmyn÷x3y=4x2则()A.m=6,n=1B.m=5,n=1C.m=5,n=0D.m=6,n=010.计算正确的是()A.(9x4y3-12x3y4)÷3x3y2=3xy-4xy2B.(28a3-14a2+7a)÷7a=4a2-2a+7aC.(-4a3+12a2b-7a3b2)÷(-4a2)=a-3b+ab2D.(25x2+15x2y-20x4)÷(-5x2)=-5-3xy+4x2二、填空题:1.(-21a)6÷(-21a)3=_________.2.(25a3x3y)2÷__________=5a2x2y23.5324(123)()________.xyzxyxy4.22[(2)](2)abba=_______________.5.6x2÷(-2x)=_________.6.8x6y4z÷_______=4x2y2.7.(xy2-4x3y2)÷(-2xy2)=_______.8.(5a3b2+10a2b3)÷________=a+2b.9.()÷(3a2b3)=2a3b2-a2b+3.10.[6a2b2+________+________]÷________=3a+b-1.三、计算题:1.242215()(5)abcab2.82443215(3)(4)xyzxyzxy3.(0.16mn4-0.6m2n3+1.4mn3)÷(-52mn3)4.先化简再求值:[4(xy-1)2-(xy+2)(2-xy)]÷41xy,其中x=-2,y=51.5.已知长方体的体积为35a3b5cm3,它的长为abcm,宽为23ab2cm.求(1)它的高;(2)它的表面积.