30 БАЛЛОВ! Отметь правильные свойства, если:
a–√+b√=a+b−−−−√
a2−−√=aa∈R
a–√2=a,a≥0
a⋅a−−−−√=a,a≥0
a–√:b√=a:b−−−−√
a–√+b√=a+b−−−−√
a2−−√=aa∈R
a–√2=a,a≥0
a⋅a−−−−√=a,a≥0
a–√:b√=a:b−−−−√
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