Expression 2: "x" squared plus "A" "y" squared plus "B" "x" Subscript, 1 , Baseline plus "C" "y" Subscript, 1 , Baseline plus "D" "x" Subscript, 1 , Baseline "y" Subscript, 1 , Baseline plus "E" tilde 0x21+Ay21+Bx1+Cy1+Dx1y1+E~0
2
Expression 3: "x" squared plus "A" "y" squared plus "B" "x" plus "C" "y" plus "D" "x" "y" plus "E" equals 0x2+Ay2+Bx+Cy+Dxy+E=0