A very nice math olympiad question || Surprisingly easy || You should know this trick || Algebra

See the way I breakdown the solution of this question. There is a lot you can learn from this video.
. ENJOY
If this is your first time to my channel, here, I shared simple step by step method of solving Algebra with a simple trick.
Please like, subscribe, and share this video with your friends . Don't forget to comment if you have any questions or doubts or if you know a better way to solve this.
#education #school #learning #students #learn #exam #quiz #math #biology #academy #maths #test #exams #educational #scholarship #mathematics #_ #cbse #classes #physics #phd #registernow #campus #boardexam #speech #studentsuccess #edtech #reasoning #tutor #olimpiade #olympiadmaths #olympiadquestion #onlinemathstv
#olympiadpreparation #onlinemaths #mathchallenge #maths
#mathematics #challengingmathproblems #onlinemathtutor
#challengingquestions #olympiad2022
#olympiadmathematicscompetition #olympiadmathematicalquestion
#polynomials #polynomialequations
#polynomialsandfactorisation9thclassapandts #polynomialsclass9

[@danmimis4576]

What's wrong with √1 = -1?

[@SidneiMV]

[1 + √(1 + x)]³ = x²
√(1 + x) = u
1 + x = u² => x = u² - 1
(u + 1)³ = (u² - 1)²
(u + 1)²(u + 1) = (u + 1)²(u - 1)²
(u + 1)²[u + 1 - (u - 1)²] = 0
(u + 1)²(u² - 3u) = 0
u(u + 1)²(u - 3) = 0
u = 0 => x = -1 (not valid)
u = -1 => x = 0 (not valid)
u = 3 => *x = 8*

[@SpencersAcademy]

Excellent!!!