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