Question

Se considera multimea A={0;36;81;9/100;1;-4;0;25}.Determinati multimea B={x apartine Z|x^2 aparține A}

Answer 1

√0=0∈B

√36=6∈B

√81=9∈B

√(9/100)=3/10∈B

√-4 imposibil

√0,25=0,5∈B

B={0,6,9,3/10,0,5}