Expressão 3: left parenthesis, "x" minus 0 , right parenthesis squared plus left parenthesis, "y" minus 0 , right parenthesis squared equals 4x−02+y−02=4
3
Expressão 4: left parenthesis, "x" plus 2 , right parenthesis squared plus left parenthesis, "y" plus 2 , right parenthesis squared equals 4x+22+y+22=4
4
Expressão 5: left parenthesis, "x" minus 2 , right parenthesis squared plus left parenthesis, "y" plus 2 , right parenthesis squared equals 4x−22+y+22=4