How to solve this Math Olympiad Problem | Here is a simple and easy solution

#learnMathwithZain #math #mathproblems #satmath #olympaid #olympiadmathematics #olympiadmathematicscompetition #trickymaths #mathtricks #jee

[GoogleAccount-pict]

I get it but i would have never thought of that. How do you get the intuition behind these? I would love to learn the trick to know the answer. Thank you for these videos.

[alfonsojesusdiaz]

Lot of thanks as always
(a+b)³=a³+b³+3(a.b)(a+b)
--/--
(x+1/x)³ =
x³+1/x³+3(x•1/x)(x+1/x)
=
[x³+1/x³+3(x+1/x)]

--
(x+1/x)²= x²+1/x² +2(x•1/x)
=
[x²+1/x²+2]