Question

36x58+72x71简算怎么写

Answer 1

原式等于
72×（29+71）
=72×100
=7200
所以原式的结果为7200.

Answer 2

36×58+72×71=36×(2×29)+72×71=72×29+72×71=72×(29+71)=72×100=7200