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精品资料
七年级数学下 --- 整式的乘法综合练习题
(一)填空
1.a8=(-a 5)____.2.a15=( ) 5.3.3m
2・2m
3=______.4.(x+a)(x+a)=______ .
5.a3・(-a) 5・(-3a) 2・(-7ab 3)=_____.6.(-a 2b) 3・(-ab 2)=____.7.(2x) 2・x4=( ) 2.
8.24a2b3=6a2・______.9.[(a m
)n]p=______.10.(-mn) 2(-m2n) 3=______.
11.多项式的积 (3x 4-2x 3+x2-8x+7)(2x 3+5x2+6x-3) 中x3项的系数是 ______.
12.m是x的六次多项式, n是x的四次多项式,则 2m-n是x的______次多项式.
14.(3x 2)3-7x 3[x 3-x(4x 2+1)]=______ .
15.{ [(-1) 4]m
}n=______. 16 .-{-[-(-a 2)3]4}2=______.
17.一长方体的高是 (a+2) 厘米,底面积是 (a 2+a-6) 厘米 2,则它的体积是 ______.
18.若 10m
=a,10n=b,那么 10m+n
=______.
19.3(a-b) 2[9(a-b) n+2](b-a) 5=______(a-b) n+9.
20.已知 3x・(x n+5)=3x n+1-8,那么 x=______.
21.若 a2n-1 ・a2n+1=a12,则 n=______. 22 .(8a 3)m
÷[(4a 2)n・2a]=______.
23.若 a<0,n为奇数,则 (an)5______0. 24 .(x-x 2-1)(x 2-x+1) n(x-x 2-1) 2n=______.
25.(4+2x-3y 2)・(5x+y 2-4xy) ・(xy-3x 2+2y4)的最高次项是 ______.
26.已知有理数 x,y,z满足 |x-z-2|+(3x-6y-7) 2+|3y+3z-4|=0 ,