Răspuns:
A={2⁰,2¹,2²,2³}
B={x∈Nl xl8}
A={1,2,4,8}
B={1,2,4,8}
A=B
d)A={x∈Zl lx+3l<5}
B={x∈Zl lxl<7}
lx+3l<5
-5<x+3<5
-5-3<x<5-3
-8<x<2
A={-7,-1,0,1,2}
B
lxl≤7
-7≤x≤7
B={-7.-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7}
Pt ca nu stiu cerinta nu pot sa-l fac mai departe
Explicație pas cu pas:
