Expression 4: "y" equals "x" left parenthesis, 2 minus "a" minus 1 half "h" , right parenthesis plus 1 half "a" squared plus 1 half "a" "h" plus 2y=x2−a−12h+12a2+12ah+2
4
Expression 5: "y" equals "x" left parenthesis, 2 minus "a" , right parenthesis plus 1 half "a" squared plus 2y=x2−a+12a2+2