Question

Scrieti elementele multimilor

Answer 1

A={1,2,3} B={-5,+5} C={-1,-2,2,1}

Answer 2

x=1, 3×1=3
x=2, 3×2=6
x=3, 3×3=9
A={1,2,3}
|x|=5, x=5,-5
B={5,-5}
|x|=1,-1 rezulta x=1,-1
|x|=2,-2 rezulta x=2,-2
C={-2,-1,1,2}