比较1234*4321与1235*4320的大小.
问题描述:
比较1234*4321与1235*4320的大小.
怎么比?
答
1234*4321-1235*4320
=1234*4321-(1234+1)*4320
=1234*4321-1234*4320-4320
=1234(4321-4320)-4320
=1234-4320