Expressão 1: left parenthesis, "x" squared plus "y" squared , right parenthesis greater than or equal to 25x2+y2≥25
1
Expressão 2: left parenthesis, left parenthesis, "x" plus left bracket, negative 4.5...4.5 , right bracket , right parenthesis squared plus "y" squared , right parenthesis less than or equal to 1 quarterx+−4.5...4.52+y2≤14