Expression 1: "y" equals left parenthesis, left parenthesis, "x" plus 3 , right parenthesis left parenthesis, "x" plus 6 , right parenthesis left parenthesis, "x" minus 3 , right parenthesis left parenthesis, "x" minus 6 , right parenthesis "x" , right parenthesis Superscript, left parenthesis, 1 seventh , right parenthesis , Baseliney=x+3x+6x−3x−6x17