Expression 1: 6 "x" ( 1 minus "x" ) to the 5th power minus 15 "x" ( 1 minus "x" ) to the 4th power plus 10 "x" ( 1 minus "x" ) cubed plus 0.5 3 5 2 8 ( 6 "x" to the 5th power minus 15 "x" to the 4th power plus 10 "x" cubed )6x(1−x)5−15x(1−x)4+10x(1−x)3+0.53528(6x5−15x4+10x3)