1 ³√40-√2/5+2√1/10= 2 1/2√32+√8/2-1/5√50= 3 42√1/6-（√50-2√32）√3=

1 ³√40-√2/5+2√1/10= 2 1/2√32+√8/2-1/5√50= 3 42√1/6-（√50-2√32）√3=
1 ³√40-√2/5+2√1/10= 2 1/2√32+√8/2-1/5√50= 3 42√1/6-（√50-2√32）√3=

1 ³√40-√2/5+2√1/10= 2 1/2√32+√8/2-1/5√50= 3 42√1/6-（√50-2√32）√3=
³√40-√2/5+2√1/10
= 2³√5-1/5√10+1/5√10
=2³√5
1/2√32+√8/2-1/5√50
= √8+√4-√2
=2√2+2-√2
=2+√2
42√1/6-（√50-2√32）√3
=7√6-√150+2√96
=7√6-5√6+8√6
=10√6