@Azhar_9212

Or just do 96×4 = 384
9600-384 =9216

@risto4689

96*96 = 100*96 - 4*96 =9600 - 4*(100-4))= 9600-400+16 =9216

@현준강-t2k

(100-n)²=10000-200n+n²

@joe4582

(90+6)²=90²+6*90*2+6²

@Shovon-t3r

This trick will only be useful when I forget to bring my calculator during an exam

@Jackeboyc

91^2=8,281 
The method would put it as this as well

@mountcarmel7116

Is true only for the 90th group?

@demongodgaming9052

But what if number is like 78

@tamirerez2547

Its not working with 91 and also with 97.
I mean what method is this anyway???!!!
Shortcut in math must have a reason and logic behind it. 97x97 is 9409.
And NOT 9449 as this method says.
Please, delete this awful video from YouTube and don't teach math ever again. 

Math teacher

@Comander_Ahsoka_Tano

Why can’t we just write down 96x96
Simple and fast

@SLel2245

Tried to use this on a lower number like 15 except I don’t know 85 squared, so using this method 100 takeaway 85 is 15 so now to find what 15 squared is I need to know 15 squared 🧌