（4√10+5√40）/√10
=（4√10+5√4*10）/√10
=（4√10+5√4*√10）/√10
=（4√10+10√10）/√10
=14√10/√10
=14
4倍根号10加5倍根号40的和、除以根号10 4倍根号10加5倍根号40的和、除以根号10
4倍根号10加5倍根号40的和、除以根号10 4倍根号10加5倍根号40的和、除以根号10
数学人气：955 ℃时间：2020-04-14 12:25:53
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