||'''Book'''|| Advanced Engineering Mathematics ||
 ||'''Author'''|| Erwin Kreyszig ||
 ||'''Edition'''|| 8th Edition ||

/* code_begins */

{{{D=var('D')
w=solve(64*D**2+16*D+1==0,D)
print w

}}}

* '''Solution by''': 
   * <sawankumar khillare ,teaching ,MGMsJNEC,Aurangabad
   * <Your Name>, <Profession>, <Organization>