@math.vibe:

gabrielbogdan767 :

Where you learn that in Europe?

sarina :

EUROPE: (4+5)² = 9² = 81

Zosjaq😘 :

me: (4+5)² 4+5=9 9×9=81

julius.krh :

Best way:

BJM :

On earth we do 4+5=9 then 9x9 which is 81

Felix.¹⁶¹🚩 :

(a+b)² = a² + 2ab + b²

Vlad-s7n :

Bro? Im from Europe and I have no idea what you just did

Marchew :

Just do that 😐 (4+5)² 4+5=9 9×9=81

⊹ 𝚂𝚒𝚎𝚗𝚊 ⊹ :

I don‘t know which Europe you mean.

. :

In Europe We dont use this method

†mattia† :

that's not how we in Europe do, we use that formula for the square of binomials

tony.b :

Su vede che ho studiato in Cina e non me ne sono accorto.

TryProAnde :

we don't use that in EU we are using: (a+b)²= a²+2ab+b² soo 16+40+25 =56+25 =81

★⁂⁙𝓥ᎥⲕϮ𝑜𝓻Ꭵⱥ⁙⁂★ :

Einfach 4+5=9 dann 9 hoch 2 fertig

Hunor Tulit :

(4+5)² = 9²=81

Kris :

I dont which part of Europe uses that..we just do (4+5)= 9²=81

Mohamed :

I dont know where he got this information from

Soupyyy :

what i do (im in europe): (4+5)² 4+5=9 9²=9×9=81 pretty easy imo

แดง :

in europe we do 4+5 and 9x9

Frida :

is both are just normal numbers you just add them together so (4+5)² = 9² = 81

sekiroring :

a2+2ab+b2

auriela :