Expression 1: exponent left parenthesis, left parenthesis, "x" to the 4th power plus "x" squared minus "x" plus StartRoot, 5 , EndRoot , right parenthesis / 5 , right parenthesis plus hyperbolic sine ( ( "x" cubed plus 21 "x" plus 9 ) / ( 21 "x" plus 6 ) ) minus 3.0expx4+x2−x+5/5+sinh((x3+21x+9)/(21x+6))−3.0