七年级数学兴趣小组活动专题2答题纸b

(3)(2a-b2)2 (4)(5)(6)(a+1)(a-1)(+1)(+1)(+1)(7)(a+2b-3c)(a-2b+3c) (8)(9) (10)20.(本题6分)(1

腾讯文库七年级数学兴趣小组活动专题2答题纸b