Question

what is the formula of (a+b+c)2 only for genius

Answer 1

It is :

a^2+b^2+c^2+2(ab+bc+ca)

Answer 2

BONJOUR,
❤ ❤ ❤ ❤

$(a + b + c) {}^{2} \\ = a {}^{2} + b {}^{2} + c {}^{2} + 2ab + 2bc + 2ac \\ a {}^{2} + b { }^{2} + c {}^{2} + 2(ab + bc + ac) \\ \\ \\ hope \: it \: helps$
☺☺☺☺☺