乘法的结合律啊58*58+58*42解:=58*(58+42) =58*100 =5800
您好,a270280775 题目:58*58+58*42解析:=58*(58+42) =58*100 =5800
58*(58+42)=5800
58×(58+42)=58×100=5800
58*(58+42)=58*100=5800