I am sure under pressure during exam it won't remember and getting confusion with plus or minus. If you explain same trick with how it is derived, then nobody will forget
Because we know (a+b)^2-(a-b)^2=4ab, here the situation is for any power of x , 'a' & 'b' are reciprocals, so it will be 4*x^n*1/x^n for any power of x which is equal to 4 and that's why substituting values we get (x^n +1/x^n)^2-(x^n-1/x^n)^2=4 ,hence (x^n+1/x^n)=sq.rt of{(x^n-1/x^n)^2+4} and (x^n-1/x^n)=sq.rt of{(x^n+1/x^n)^2-4, I hope it's clear
(X+Y)^2 aur (X-Y)^2 ka formula use krke equation substitute krke ye chiz bnai gai hai...No need to remember if you can do proper substitution in above formula.
After washing your full video I want to say that it is not a concept it is a trick but can you please explain the reason or the concept behind this trick
Proof Let X^99 =t, then it becomes t + 1/t = 11 (t - 1/t )^2 = (t + 1/t )^2 - 4 t -1/t = √( t +1/t)^2 - 4 Put the value of ' t' to get the desire answer.
@@prosenjitdas1166 x square plus 1/x square ki value nikal ni hai if then we add plus 2 then root of it x plus 1/x ki value aajaegi if then we subtract 2 then root of it x minus 1/x ki value aajaegi
X to the power 99 ko a suppose krlo to a+1/a given ho gya ur a-1/a find krna h. Bhai log kbhi rtta mt maro concept ko smjho ratta kvl practice me chlta h ppr me concept hi kam krte h
Kbi kbi exam me yhi rtanti vidya kam ajati h..knowledge kasi bi ho ek na ek din jrur kam ati h..wase bi exam me sbse jyada important hota h time management
@@mithleshchaudhary304 sorry but sbka mind alg hota h hard work na krke agr ap smart work kre to exam me ap jyada score kr paoge..isliye khi se kuch bi knowledge mile le leni cahiye..okkk dear
Then both the equations will have same answers. Ie. 2² ± 1/2² = 5..... (i) 2² ± 1/2² = x..... (ii) Then from (i) and (ii) x = 5 [since LHS is same in both equations]
Wo isliye kyuki jo equation hai uska square krenge to x^2n + x^(-2n) +2 =a² Ab question wali eqn banane ke liye eqn m +2-2 krenge jisse (x^n-x^(-n))^2+4=a²
@@KULDEEPSINGH-rh3go Aisa hai na bhai, ki bina logic diye hue trick batana is not maths. Ye ratta marne jaisa hai..ki aise likha ho to aise kardo. Shayad exam me number aa jaye lekin it will not be good in the long run.
@@KULDEEPSINGH-rh3go Mujhe pata hai logic lekin comments me explain karna possible nahi hai. Isne video banayi hi thi to 5 min leke logic bhi explain kar hi deta na
Let x^99 =a Then a+1/a = 11 Sq. both sides a^2 + b^2 +2a x 1/a= 121 a^2 +b^2 = 119 For making a formula of (a-b)^2 we ll subtract - 2 on both sides Therefore (a-b)^2 = 117
बहुत ही सुन्दर क्लास है sir ji 👏 मुझे पूरा पूरा समझ आ रहा है थैंक्यू sir ji 🚩🙏
(9)२=81,81-4=77= √ 77 Ans. Thank you ✍️🌺 Sir.
It's amazing way to teach math,nice tricks for these type of tough questions 👌🏻😍 thank you so much sir.
And 9^2-4=81-4=√77
81-4=√77✓
Thanqqq so much dear sir👍👍👍👍
Very nice trick.
Continue video sir please .
Thank you
Very useful post h gurudev,👍👍💐plzzzz more be provide🤗
I am sure under pressure during exam it won't remember and getting confusion with plus or minus.
If you explain same trick with how it is derived, then nobody will forget
ruclips.net/video/56XAkbfn2Eg/видео.html plzz watch videos with concept
He should explain from the first principles:
Assume x^99 = y
y + 1/y =11
y - 1/y = ?
(y + 1/y)^2 = 11^2
y^2 + 1/y^2 + 2 = 121
y^2 + 1/y^2 = 119
Now say: y - 1/y = a
(y - 1/y)^2 = a^2
y^2 + 1/y^2 - 2 = a^2
119 - 2 = a^2 = 117
a = sqrt 117
(y - 1/y) = sqrt 117
x^99 - 1/x^99 = sqrt 117
(a+b)^2 = (a-d)^2 + 4ab
This is the formula
Dear stranger, may your mom live long.
To learn the difficult topic of reasoning, I must follow Vidya Guru channel. Many of their taught questions I have found in the IBPS clerk exam
Good session ..:) I like Vidya Guru videos as well. Their teacher post easiest and exam relevant content.
Because we know (a+b)^2-(a-b)^2=4ab, here the situation is for any power of x , 'a' & 'b' are reciprocals, so it will be 4*x^n*1/x^n for any power of x which is equal to 4 and that's why substituting values we get (x^n +1/x^n)^2-(x^n-1/x^n)^2=4 ,hence (x^n+1/x^n)=sq.rt of{(x^n-1/x^n)^2+4} and (x^n-1/x^n)=sq.rt of{(x^n+1/x^n)^2-4, I hope it's clear
Great Sir
Thank you so much
Wow आपके ट्रिक ने तो पूरे RUclips में आग लगा दिया गुरुजी
√77 hoga thank you🌹😊
Thanks a lot. 👨🏫🧑🏫
(X+Y)^2 aur (X-Y)^2 ka formula use krke equation substitute krke ye chiz bnai gai hai...No need to remember if you can do proper substitution in above formula.
वर्गमूल77
Long method h vo
After washing your full video I want to say that it is not a concept it is a trick but can you please explain the reason or the concept behind this trick
Algebra by sahil sir,,all concept will clear
Proof
Let X^99 =t, then it becomes
t + 1/t = 11
(t - 1/t )^2 = (t + 1/t )^2 - 4
t -1/t = √( t +1/t)^2 - 4
Put the value of ' t' to get the desire answer.
thnx for d logic
Yes.
Nice
77 root
from where can we do this type of questions.
Thank u sir .....🙏🙏HW Answer is Square root of 77
Sir G you are brilliant teacher 👌👌👌💪💪💪💪 I am impressed your study trick 👌👌🙏🙏🙏
Bhai trick toh thik ha par Tera ko aesa bahut sara tricks sikhaye gayega yaad kaisa rakhega😀
aapka trick mst h sir. thank u video upload krne k lia
ALP Second Stage Part B Electrician/Wire Man etc: ruclips.net/p/PLXwm7bYDg57kx1gw0KLVbuzvnG3OzgdNZ
81-4
Root 77 Ans
Right
Right dear 🙏☺️
Under root 77...thanks a lot sir 🙏😇🌺🌺
it is because of (a+b)^2=(a-b)^2+4ab...
Oh...
Thanks
81-4=√77
👍👍👍🙏🏼🙏🏼🙏🏼🙏🏼
√77 is the right ans sir
or ye trick bahut achhi lagi
thanks aap hare liye itni achhi trick laker aaye
Sir ji concept bahut fantastic tha
thank u so much sir for such an easy trick
Sir -4 why is ka phala math ka to 2+, - tha? 😕☹️
Yes why 4
@@prosenjitdas1166 x square plus 1/x square ki value nikal ni hai
if then we add plus 2 then root of it x plus
1/x
ki value aajaegi
if then we subtract 2 then root of it x minus 1/x
ki value aajaegi
Shi kaha apny
@@prosenjitdas1166 bro because the power is same if we find + then we put√n^+4 and - √n^-4
Mujhe bhi samaj nahi aya pehle 99 me 4 kaise ho sakta
9^2-4
81-4
√77 this is answer sir g....
Chup
77^
Right ans
@@rajputchauhan791 right ans bhai
,√77
Thnk u so much bht hi badhiya trics hai
Simple h (a-b)^2= (a+b)^2-4ab
Bss isi se bn jaeinga
sahi bole ratan jee
77 root to (ans)
X to the power 99 ko a suppose krlo to a+1/a given ho gya ur a-1/a find krna h. Bhai log kbhi rtta mt maro concept ko smjho ratta kvl practice me chlta h ppr me concept hi kam krte h
My favorite Sir and channel love you
9ka square=81-4=√77
Am I right sir?
Reply please
Yes ur correct
(A+b)2 =(A-b)2 + 4Ab se ye banega
Kya ap example se bta skte h
Koi bhi sankhya rakho x pe power same hona chahiye
eg.( A+B)²=(A-B)²+4AB
=>(x¹²8+1/x¹²8)² =(x¹²8-1/x¹²8)² +4*x¹²8*1/x¹²8
=>(9)²=(x¹²8-1/x¹²8)²+4
=>81-4=(x¹²8-1/x¹²8)²
=>77=(x¹²8-1/x¹²8)²
=>x¹²8-1/x¹²8=√77🙂
@@radheshyamtiwari9887 Gracias
√77
9 square - 4 that means
81-4 =77 ROOT 77 IS ANSWER
Meri problem solve kardi . thanks dear sir
कृपया रटंतु विद्या न बताएँ, इसके पीछे का कन्सेप्ट बता कर सिखाएँ
Kbi kbi exam me yhi rtanti vidya kam ajati h..knowledge kasi bi ho ek na ek din jrur kam ati h..wase bi exam me sbse jyada important hota h time management
Exam me koi apse ye nhi puchega ki kase kiya bs ans..kitne seconds me ata h ye jyada important h okk..ji
@@rituvatsal5621 is tarah ratne se bhool jaogi deer
Aap kya exam me ratoge
@@mithleshchaudhary304 sorry but sbka mind alg hota h hard work na krke agr ap smart work kre to exam me ap jyada score kr paoge..isliye khi se kuch bi knowledge mile le leni cahiye..okkk dear
Master Saab avi bht padhna hoga hm sbko
sir if power are not same then what will we do....tell me sir
Then you have to find it...or it will give as 9 or 16 so u can write 3 to the power 2 & then use a2-b2 formula....generally they will give u easy
@@byseemil_ thankew BB
Many many thanks 😊 sir 🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻
Answer of last question is √77.
Need to be one more times explanation.. why always ➕4 or ➖4 .... Request to you please explain..!!
Yss plz I also want to know about it....
see zeba comment section
Mujhe bhi same yahi question puchhna h sirji ki 4 lagana to kyo
hi
A
Root 77 is correct answer sir
Thank you sir ☺️ √77 hoga ans
Sir power change ho to....,,followe hoga ya ni??
Kahan se ho
Last question ka answer
√77
Hi √77
Nice trick..thanks sir
Homework ans
9^2=81
√(81-4)=√77
Thanks sir
Sir ek doubt h
m kaise maan lu ki yhi answer h
Verify kaise hoga vo bhi btaye
Sir
Formula used here is 4ab=(a+b)^2-(a-b)^2
All d answers u will get by using this formula.
But how the odd powers can be converted into power of squares
root 77 is the ans
Amazing and so helpful
(9)² =81--4 =√77 answers thank you sir ji
Why we perform operation with value 4 only..
But u should clarify the formula
(a+b)^2 = (a-b)^2 +4ab
Sir...jb dono me ++/- - ho tb kaise solve krenge.
If both are ++/- -, then question becomes the given;;; common logic
Ha bahi Shi kah rha ho
Bahuth badiya doubt hi
Then both the equations will have same answers.
Ie.
2² ± 1/2² = 5..... (i)
2² ± 1/2² = x..... (ii)
Then from (i) and (ii)
x = 5 [since LHS is same in both equations]
Basic concept मैथ्स all Topic
Sir alzebra ke mp pulice ke liye questions bataye plz
√77 is the right answer
Tell the simple formula...
(a+b)^2-(a-b)^2=4ab...
Bro basic funda v batao (a+b)^2 - (a-b)^2= 4ab pe ye question based h
Thanks bro
Pehle proof by solving for x dekar shortcut batate toh zyada anand aata. Phir bhi achha laga
Sir 1 problem hy ..
Agr solve krny ky liye power alg ho to kesy kry gy
Ab most important topics ko sikhe easy tricks ke saath mei yeh fact hai it's not fake please watch study with easy concept It's geniune
Answer 77
Thank you sir
sir aap trick batane se phele logic bataye jisse hum confuse na ho
It's (a+b)^2-(a-b)^2=4ab yehi hain koi trick nahi here b=1/a so ab =4
Basic concept के साथ रेलवे मैथ्स join now।
Aap confused hi ache lagte h😀
Sir it's amazing. . Last answer is 77
last question ka answer hai root 77
√77......
Last question ka answer /77 h
Bahut badhiyaan sir
81-4 root 77sir
psrinivas reddy u
रूट 77
Kya bhai Chalo sorry but ashi bat mat bolo yar or please a post delete kr do bhai
sorry
ji maim √77
Hi
awesome masti root 77
Yadi sir x ki paower same na ho or diff ho to tab bhi ye hi formula lgega
√77 is ans.. thank you so much sir
4+aur4-kyu karna hai,iske bare mei bataiye??
Han help plzz
Sir (_) or (+) 4hi kyo krege hmesha.....😯😯
Dost ek formula hota √(a) 2-4
It's (a+b)^2-(a-b)^2=4ab yehi hain koi trick nahi here b=1/a so ab =4
,Root me 77
Trick ke sath me eska basic concept bhi bataye ki ye formula bna kaise hai.
Sir iss question ko simple method se kis tarah solve karenge
Sir sabhi question me -4 +4 only kyu le rahe h
ट्रिक का कोई concept नहीं होता है
🥰🥰😘😘😘
@@abhijeetkumardeo338 trick concept ke simplification se hi aati hain
@@abhijeetkumardeo338 It's (a+b)^2-(a-b)^2=4ab yehi hain koi trick nahi here b=1/a so ab =4
why we use 4?
Superb quality of questions
Iska answer √77 aayega sir
Hii miss
@@davendrachandrakar7648 yes
YES root 77
Wow ri8
Bt kaise pta hai aapko
Sir last question Ka answer √77 ho ga
Shi hai
Why I will subtract or add 4in any one?
Wo isliye kyuki jo equation hai uska square krenge to x^2n + x^(-2n) +2 =a²
Ab question wali eqn banane ke liye eqn m +2-2 krenge jisse (x^n-x^(-n))^2+4=a²
4ab subtract
Root 77 is right answer thank you so much sir
hello sir (-) me Sirf 4 hi Kyu Lena he iska region Abhi to batayiye
Mera vi sawal hh
Formule iska dekh lijiy aa jayega
Vandna Sharma ???
Basic math (A+B)^2-4=(A-B)^2
Mera BHI vahi saval hai
Misguiding students to use tricks without any proper explanation
Bhai number aane chahiye.....vo kaise bhi aaye....or tumhe pata hai logic to explain kardo?
@@KULDEEPSINGH-rh3go Aisa hai na bhai, ki bina logic diye hue trick batana is not maths. Ye ratta marne jaisa hai..ki aise likha ho to aise kardo. Shayad exam me number aa jaye lekin it will not be good in the long run.
@@KULDEEPSINGH-rh3go Mujhe pata hai logic lekin comments me explain karna possible nahi hai. Isne video banayi hi thi to 5 min leke logic bhi explain kar hi deta na
@@utkarshsharma3098 (a+b)^2 =(a-b)^2 + 4ab
Very nice trick sir ji
Sir aisa koi bhi question ho power even ya odd kuch bhi ho
Pratibha Patel ji kuch bhi power ho koi problem ni h
Ssc coaching center OK sir
Thanks
Pratibha Patel 77
77
but aap all Ques. answers ko pahle proved kar le after youtube me dale
Why do you take only 4 instead of another number
(a+b)^2 =(a-b)^2 + 4ab
this formula is used here.
Tq so much sir please provide us all the math chapter and solutions and the ans is root 77
आखिर -4 ही क्यो कर रहे है आपको इसका उत्तर आता है जवाब दे केवल ट्रिक बताने से कुछ नी होता है..।।
Pllzz give risson why..??
Basic concept के साथ रेलवे मैथ्स जॉइन नाउ।
You are right
Right
ये छोटे बच्चों के लिए नहीं है
ruclips.net/video/7xTWBYIYlHU/видео.html
Why won't u always do 4 minus???
Research na karo bas trick rato
77 is the correct answer
√77 .......... Thank you sir ❤️
nice video
RANJEET GUPTA ji thanks
hi kise ho ap sabi
77
Sir Aapke Question Ka Ans..√77 hai
-4 hi kyu...
11 ka square -/+ 4 hota hai
Let x^99 =a
Then a+1/a = 11
Sq. both sides
a^2 + b^2 +2a x 1/a= 121
a^2 +b^2 = 119
For making a formula of (a-b)^2 we ll subtract - 2 on both sides
Therefore (a-b)^2 = 117
Thank you so much...sir
root 77
Right
MANISHA KUMARI I love you
77