【人教版】七年级上册数学：2.1《整式》练习题及答案

2.1324112221nbanA1B2C3D4241232yxyxABCD323332xyyxA5,3B5,2C2,3D3,3422rA2,2B2,3C2,2D3,25A3223xxxB211xxxC5222xxD125245yxx6Ax23Baba2Cyx512D07A5aB2abc2C322yx314Dyx20283aAa3Ba3Ca3D3a3241342xy21223yyxyx3a3413,,23,21,,21,3,124222xxrbaxxyxbaba53121,33,23,2,022xbayzxab6mn72a8ab521qpmmxxnmxab32,12,72,35,3,1,6,21a32abc3ab4ab31231nny3y=34a,b121134ab5x1)32()12(523xnxmxmn6a1101021010320201B2C3A45D6B7C8C134321,2,,,23yyxyx21133a3,14142,23,,21rbaxyx13,21,3222xxxbaba56)(mnm7aa21108ba21qpxab3,72,6,12,32mmnmqpmmxnmab32,12,72,3,6,21321a2)(bac3ba142)(ba3312n2n3231yy=322927314abbababa2345032,012nm32,21nm61:aa99.0)101)(101(0000;2aa99.0)101)(101(00003aa96.0)201)(201(0000