根号8+根号18
=2√2+3√2
=5√2
2根号12+根号48
=4√3+4√3
=8√3
3根号20-根号45-根号5分之1
=4√5-3√5-√5/5
=4√5/5
根号9分之2+根号50-根号32
=√2/3+5√2-4√2
=4√2/3
根号8+根号18
=2根号2+3根号2
=5根号2
2根号12+根号48
=4根号3+4根号3
=8根号3
3根号20-根号45-根号5分之1
=6根号5-3根号5-1/5根号5
=14/5根号5
根号9分之2+根号50-根号32
=1/3根号2+5根号2-4根号2
=4/3根号2
回答完毕
√8+√18=2√2+3√2=5√2
2√12+√48=4√3+4√3=8√3
3√20-√45-√1/5=6√5-3√5-√5/5=14√5/5
√2/9+√50-√32=√2/3+5√2-4√2=4√2/3
?
5√2
8√3
(14√5)/5
(4√2)/3
6-(5√6)/6