Expression 1: "f" left parenthesis, "x" , right parenthesis equals left brace, "x" less than 0 : StartFraction, left parenthesis, 2 "x" squared plus 13 , right parenthesis Over "x" squared minus 1 , EndFraction , StartFraction, left parenthesis, 5 "x" minus 26 , right parenthesis Over "x" plus 2 , EndFraction , right bracefx=x<0:2x2+13x2−1,5x−26x+2