If a+ (1)/a+2 =0, then value of (a+2)^3 +(1)/(a+2)^3 is

• ans is 8 becoz we know that a^3+b^3=(a+b)+3ab(a+b)
  by using this (a+2)^3+(1)/(a+2)^3={a+2+(1)/(a+2)}+3*(a+2)*(1)/(a+2){(a+2)+(1)/(a+2)}
  =>by puttinf a+(1)/a+2=0
  we get {2+0}+3*(2+0)
  =>8
• 12 years agoHelpfull: Yes(0) No(3)