初二数学测试题大全

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1、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)(    )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＝-4

2、x(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.(    )20.(    )21.2a6-32a2b4 ＝2a2(a2+4b2)(a+2b)(a-2b)(    )22.(    )23.(    )24. -x3y3-x2y2+xy＝-xy(x2y2+xy-1)(    )25.-8a3+2

3、7b3＝-(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)+(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

4、(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.x2-2xy+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

5、+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)＝(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

6、-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.(    )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

7、-y6)+(y6-x3)＝(x-y2)(x2+xy2+y4)(2a-1)(4a2+2a+1)(    )63. a8-81b8＝(a4-9b4)(a4+9b4)(    )64. a16-b16＝(a-b)(a+b)(a2+b2)(a4+b4)(a8+b8)(    )65. a4-4a3+4a2-9＝(a2-2a-3)(a2-2a+3)(    )66. (    )67. a2-b2+m2-n2+2(am-bn)＝(a+m+b +n )(a+m-b -