Expression 1: 1000000 times left parenthesis, 1.0 1 5 Superscript, 4 "x" , Baseline , right parenthesis minus 80000 left parenthesis, StartFraction, left parenthesis, 1.0 1 5 to the 4th power , right parenthesis Superscript, "x" , Baseline minus 1 Over left parenthesis, 1.0 1 5 to the 4th power minus 1 , right parenthesis , EndFraction , right parenthesis1000000·1.0154x−800001.0154x−11.0154−1