八年级数学上册第十四章整式的乘法与因式分解14.1整式的乘法14.1.4第4课时整式的除法同步训练(新版)新人教版.doc

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1、1第 4 课时 整式的除法学生用书 P7912016陕西下列计算正确的是( )A x23 x24 x4 B x2y2x32 x6yC6 x3y23x2 x2 D(3 x)29 x22下列式子化简后的结果为 x6的是( )A x3 x3 B x3x3C( x3)3 D x12x23下列计算正确的是( )A( a)2a a B S3S S3C(c) 4(c) 2c 2 D( x)9( x)9142016苏州下列运算结果正确的是( )A a2 b3 abB3 a22 a21C a2a4 a8D( a2b)3(a3b)2 b5下列各式中,计算正确的是( )( 2a2b3)(2 ab) a2b3;(2

2、a2b4)(2 ab2) a2b3;2 ab2c ab24c;12 a2b3c2(5 abc)2 b.15 1125A B C D66 a3b5与一个多项式的积为 24a3b718 a5b52 a(6a3b3)2,则这个 多项式为( )A4 b23 a2 B4 ab23 a2bC4 b23 a212 a4b D4 b23 a26 a3b27计算:(1) S7S3_ _;(2)2016上海 a3a_ _;(3)( t)11( t)2_ _;(4)(ab)5ab_ _;(5)(3) 6(3) 2_ _;(6)a100a100_ _82016海南期末计算(2) 3( 1) 0的结果是_ _39201

3、6泰兴期末当 x_ _时,( x2) 01 有意义10若 2x3,4 y5,则 2x2 y的值为( )A. B2 C. D.35 3 55 6511计算:(1)6 x2y3xy;(2)8 a2b36ab2;(3)(0.5 a2bx2) ;(25ax2)(4)(6108)(3105);(5)(6x2y3)2(3xy2)2.3122015随州 先化简,再求值:(2 a)(2 a) a(a5 b)3 a5b3( a2b)2,其中 ab .1213 观察下列各式:(x21)( x1) x1;(x31) (x1) x2 x1;(x41)( x1) x3 x2 x1;(x5 1)(x1) x4 x3 x2

4、 x1;(1)你能得到一般情况下( xn1)( x1)的结果吗?(2)根据这一结果计算:122 22 32 622 63.参考答案【知识管理】1不变 相减 am n4系数 同底数幂5多项式的每一项【归类探究】4例 1 (1)49 (2) (3) m3 (4)410 4 (5)2 y18例 2 B例 3 (1) a6y (2) ac34 32例 4 (1)3 x2 y (2)6 x2 y1【当堂测评】1B 2.B 3.B 4.B5(1) x3 (2) x3 (3) x3 (4) x3y3 (5) bm3(6)( m n)2【分层作业】1D 2.B 3.C 4.D 5.D 6.C7(1) S4 (2) a2 (3) t9 (4) a4b4 (5)81 (6)187 9.2 10. A11(1)2 x (2) ab (3) ab (4)210 343 54(5)4x2y21242 ab 513(1) xn1 xn2 x 1 (2)2 641

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