prove it for n=0,1,2,3..............
then u can say itz ture for .......any n
prove it for n=0,1,2,3..............
then u can say itz ture for .......any n
u can prove this only by induction (this is ncert misscellaneous Q )
ya thanks guys,, it was frm r scl book... even r teacher proved it wid induction :)