Math Olympiad Question | How to simplify the Radical problem | Chinese Math Olympiad Training

Can you simplify the given math olympiad question involving square root radicals?

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Math Olympiad Question | How to simplify the Radical problem | Chinese Math Olympiad Training

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[Hajidrivingtrainingcenter]

Really Beautiful! Thanks for sharing Math Olympiad Question with us! Stay Connected!😍😍😍🤗

[tombufford]

At a quick glance: Focusing on sqrt(78- 2*(sqrt(77)). Rewriting (78-2*sqrt(77)) as (1-sqrt(77))(1-sqrt(77)) then sqrt (78-2*(sqrt(77)) = (1-sqrt(77)). the given equation becomes Sqrt( 17 - sqrt(77) - (1-sqrt(77))) = sqrt( 16) = 4. Thank you for your videos.

[HappyFamilyOnline]

Great presentation👍
Thanks for sharing😊😊

[yuusufliibaan]

Thanks for the help lesson happy new year dear sir ❣️

[natewright]

In the first substitution, wouldn’t (1-sqrt(77))^2 also work?
In which case the expression simplifies to 4.

[normanc]

Thank you for explanation. I could solve upto the point of sq rt (18 - 2 sqrt(77)).

[dakshsharma]

this was an easy one. i had this sort of question in my pearson 9th grade iit foundation maths.

[jaybawaskar]

Best videos can you plz tell from where you take these questions love from India 🇮🇳

[AHMED_-..]

How do I learn to solve engineering construction issues and how to think about the quality of difficult questions in constructions please 🥺❤️

[mibsaamahmed]

Hi sir hope you had a good day, I wanted to ask that in the future will you solve a math problem from the jee please

[arulbiswas]

These are relatively easier than the question Chinese kids get in school.

[devondevon]

answer =4 did it in my head, hope it is correct

[acnmes]

Sqrt(78-2sqrt(77))
Sqrt(1-2sqrt(77)+77)
Sqrt(1-sqrt(77))^2
1-sqrt(77)
Donc
Sqrt(17-sqrt(77)-(1-sqrt(77))
Sqrt(17-1)
Sqrt(16)
Donc
4 pourrait aussi etre soltion mais en calculant par les valeur décimales on voit bien que la réponse donnée dans la video est la bonne.
Mais ou est la faille ?
Simple (1-sqrt(77)) < 0
Et une racine carrée n’a pas pour valeur acceptable, une valeur négative.
Il ne faut donc pas se faire avoir par cette soltuion qui semble si simple et intuitive

[rajeshbuya]

There are at least 3 more solutions if you considered ✓x^2 is +x or -x. Some of them are pretty interesting too.

HAPPY NEW YEAR!!!

[Gedakt]

It would help if this "teacher" learned the basics before confusing those he is trying to teach. A square root, of course, has two values, and so the correct answer here is four numbers, not one. "F"!