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1、初二数学测试题大全————————————————————————————————作者:————————————————————————————————日期:初二数学测试题大全一、判断题。1.( )2.=x2-y2 ( )3.( )4.( )5.3a3x-4b3y+3b3x-4a3y=(a3+b3)(3x-4y)( )6. (x-y)4+x(y-x)2+y(y-x)3=2(x-y)2(x-y+1)( )7.整式和分式统称有理式.( )8.x2-16y2-8y-1=(x+4y+1)(x-4y+1)(
2、 )9.( )10.把一个多项式化成几个整式的积的形式叫做多项式的因式分解.( )11.( )12.a2+2ab+b2=(a+b)2 ( )13.-4x3+8x2-4x=-4x(x-1)2 ( )14. ( )15.( )16.甲用x小时走完s千米, 乙比甲早出发a小时, 早到b小时,那么乙每小时走千米. ( )17.( )18.25y2-4a2-12ab-9b2=(5y+2a+3b)(5y-2a+3b)( )19.用A、B表示两个整式, 如果B中含有字母, 式子就叫做分式.(
3、 )20.( )21.2a6-32a2b4 =2a2(a2+4b2)(a+2b)(a-2b)( )22.( )23.( )24. -x3y3-x2y2+xy=-xy(x2y2+xy-1)( )25.-8a3+27b3=-(2a-3b)(4a2+6ab+9b2)( )26. 361-(3a+2b)2=(19-3a-2b)(19+3a+2b)( )27.( )28.a2+b2-9c2-1-2ab-6c=(a-b-3c-1)(a-b+3c+1) ( )29. (x+2)(x-3)(x2-7)+(
4、2+x)(3-x)(x+3)=(x+2)(x-3)(x2+x-4)( )30.10ab-3+6b-5a=(5a+3)(2b-1)( )31.873-763是11的倍数( )32.(m-n)2-2(m2-n2)+(m+n)2=2n2( )33. 2-2a4=2(1+a2)(1+a)(1-a)( )34.( )35.m2-n2-m+n=(m-n)(m+n-1)( )36.( )37.x3-2x2y+xy2=x(x-y)2( )38.当x=-3时, ( )39.( )40.x2-2
5、xy+y2-1=(x-y+1)(x-y-1)( )41.将a2-b2+2b-1分解因式得(a+b-1)(a-b+1)( )42.12x5-24x3+18x2=6x2(2x3-4x+3)( )43.( )44.( )45.( )46.25x2y4z16-1=(5xy2z4-1)(5xy2z4+1)( )47. x2(x+1)-y(xy+x)=x(x-y)(x+y+1)( )48.-am-1+14am-49am+1 =-am-1(1-7a)2 ( )49.ab(x2+1)+x(a2+b2)=(
6、a+bx)(b+ax)( )50. a4-3a3+3a2-a=a(a-1)3( )51.1-x6=(1-x3)(1+x3)=(1-x)(1+x)(1-x+x2)(1+x+x2)( )52.a9-ab2=a(a4+b)(a4-b)( )53. x3m+3-64y3=(xm+1-4y)(x2m+2+4xm+1y+16y2)( )54. am-1-am+2+am-am+1=am-1(1+a)2(1-a)( )55.a2(a+1)-b2(b+1)=(a-b)(a2+ab+b2+a+b)( )56.( )
7、57. (x+1)2+x(3x+2)=(2x+1)2 ( )58. 5x2m+3y4n+2-10x3m+7y2n+1=5x2m+3y2n+1·(y2n+1+2xm+4)( )59.a2n+an+1-an=an(an+a-1)( )60.( )61. 8m3(m2-n2)-27n6(n2-m2)=(m2-n2)(2m+3n2)(4m2-6mn2+9n4)( )62. 8a3(x3-y6)+(y6-x3)=(x-y2)(x2+xy2+y4)(2a-1)(4a2+2a+1)( )63. a8-81b8=(a4-9
8、b4)(a4+9b4)( )64. a16-b16=(a-b)(a+b)(a2+b2)(a4+b4)(a8+b8)( )65. a4-4a3+4a2-9
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