Expression 4: StartFraction, left parenthesis, "y" minus 2 , right parenthesis StartRoot, "y" squared plus 4 , EndRoot plus "y" StartRoot, left parenthesis, "x" minus 2 , right parenthesis squared plus left parenthesis, "y" minus 2 , right parenthesis squared , EndRoot Over StartRoot, "y" squared plus 4 , EndRoot StartRoot, left parenthesis, "x" minus 2 , right parenthesis squared plus left parenthesis, "y" minus 2 , right parenthesis squared , EndRoot , EndFraction equals 0y−2y2+4+yx−22+y−22y2+4x−22+y−22=0
4
Expression 5: "x" equals 2 plus left parenthesis, left parenthesis, StartFraction, left parenthesis, 2 minus "y" , right parenthesis StartRoot, 4 plus "y" squared , EndRoot Over "y" , EndFraction , right parenthesis squared minus left parenthesis, "y" minus 2 , right parenthesis squared , right parenthesis Superscript, 1 half , Baselinex=2+2−y4+y2y2−y−2212