整式乘法与因式分解训练(一)班级 姓名 一、 计算:(1); (2)(8ab2)(ab)23abc;(3); (4). (7); (8);(9)(2x+7y)2 (10)(3x+1)2(11) (2a23b)(2a23b)(12)()()(13)( 3+2a2)(32a2) (14)(a+b)(ab)(a2+b2)(15) (x2y+4)(x+2y4) (16)(17) (4m3)2+ (4m+3)(4m3) (18)(x5y)(x5y)(x+5y)2, (19) (m+n) 2 = (mn) 2 (20) a2+b2+ = (ab) 2 (二)因式分解:18a3bc45a2b2c2; 20a15ab; (3)(ab)23y(ba) (4) 3625x2 (5) 16a29b2 (6)(3m2n)2(mn)2(7)(4x3y) 216y2 (8)9m26mnn2 (9) a212ab36b2 (10)a2b22ab1 (11)(xy)218(xy)81 (12)412(xy) 9(xy)2(13) 18a250 (14) 2x2y8xy8y (15) a416 (16) 81x472x2y216y4 (17) (18)(18) (19) (20)