n√a⋅b=n√a⋅n√b (a≥0,b≥0,n∈N;n>1); n√ab=n√an√b (a≥0,b>0,n∈N;n>1); n√m√a=n⋅m√a (a≥0,n,m∈N;n,m>1); n√ak=(n√a)k (a>0,n∈N;n>1;k∉Z); n√ak=n⋅l√ak⋅l (a>0,n,l∈N;n,l>1;k∈Z)
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