Question 208681
You need to simplify: {{{3*sqrt( xy^5 ) * 3sqrt( x^19y^17 )}}}

{{{3*sqrt( xy^5 ) * 3sqrt( x^19y^17 ) = 3*3*sqrt( x*y^5 * x^19*y^17 ) = 3*3*sqrt( x^20*y^22 ) = 9*x^10*abs( y^11 )  }}}

Note the absolute value sign around {{{y^11}}}.