A∩N={√81/3; -15/-3}
A∩Z={-√25; √81/3; -15/-3}
A∩Q={-5/7; -√25; -15/-3; 7,1; √81/3; √1,(7)}
A∩R/Q={4√3; √12}
A/Z={-5/7; 7,1; 4√3; √1,(7); √12}
A-Q=A∩R/Q={4√3; √12}
A-R=Ф (multimea vida)
Sper ca am fost de ajutor!
