Expression 1: negative left parenthesis, StartFraction, 1 Over left parenthesis, 216 , right parenthesis , EndFraction , right parenthesis "x" to the 5th power minus left parenthesis, StartFraction, 5 Over left parenthesis, 36 , right parenthesis , EndFraction , right parenthesis "x" cubed plus left parenthesis, StartFraction, 7 Over left parenthesis, 8 , right parenthesis , EndFraction , right parenthesis "x"−1216x5−536x3+78x