Question 984481
Given Expression f(x) ={{{4x^3+3x^2-4x+k}}}
 if (x-1) is factor of above expression
 then if we put x=1 in the above expression , then the expression should be 0
 hence
         {{{4*(1)^3+3*(1)^2-4*(1)+k=0}}}
     {{{4+3-4+k=0}}}
   {{{3+k=0}}}
  k= -3
 Result : k=-3