Răspuns:
Explicație pas cu pas:
√36=6∈N
√5¹/₄=√21/√4=√21/2∈R
√7¹/₉=√64/√9=8/3∈Q
√49/√16=7/4∈Q
√4/√9=2/3∈Q
√17/√4=√17/2∈R
√3²*2²*2²*2²............prelungesti radicalul=3*2*2*2=24∈N
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A∩N={6,24}
A∩Q={8/3 , 7/4, 2/3 ,}
A∩(R/Q)={√21/2 , √17/2 }
