Quickly squaring a 2-digit number

[SaiakhilMendu3]

Superfast



[SaiakhilMendu3]

really super



[aarongrooves]

This is the first squaring video I've watched that's actually worth it. THANK YOU! Oh, and death to expertvillage.

[jacobromu]

(50+7)^2=

50^2+5*7+7*5+7^2

[XANDERXXZ]

Sounds like nicolas cage!

[runeplaya5]

kinda sad theres only these 3 vids from the site their really helpful

[neelmagician]

thats really good. thanks a lottttttttttttt

[worldismine69]

relly nice dude

Can we make whit cube white 3 like this (45) cube 3

[jmqff]

...ah...this looks like the expansion of

(a+b)^2, which is why that "2" appears

in that multiplication 5x7x2x10 for

the '57' example. A fun video, with

pleasant, mellow speaking voice.

[akshatmikku]

fucking shit...!

this is simple(a+b)^2...whr a=50 and b=7...direct formula...!

however shevko16 trick is nice

[Shevko16]

y not do for 57

do 57-50=7

den half 50 = 25

25 + 7 = 32 <---- first two digits

den do 7 squared = 49 <----- last two digits

den put dem together

which equals 3249.

[vsimoul]

jesus! this is standard multiplication ffs!

[iggy4323]

I hear you, vsimoul.

[just0that0guy]

id rather use a calculator haha but this is a pretty cool trick

[themanfromthehouse]

thats cause your a retarded american

[just0that0guy]

actually im Canadian and honestly using a calculator saves about 1 minute... so yea. what are you too poor to buy a calculator... im sorry

[themanfromthehouse]

I'm sure i can afford a calculator

and after about 5 minutes of learning something like this it actually saves time.

im sorry i take back my last comment i was pissed of that day

[just0that0guy]

id rather use a calculator haha but this is a pretty cool trick

[littlemute]

i like this interpretation of the FOIL method [a^2+2ab+b^2] it makes it look very easy

i will find this very useful

Thanx :P

[arkabc]

Very cool! Something useful and easy to remember.

[brucebair]

Really great info. Enjoyed it and better use it.

[jackcat1964]

brilliant!