Question

expand (a+b+c)^2
fast solve plz​

Answer 1

$\red{\bold{\underline{\underline{Solution:}}}}$

(a+b+c)²

= {(a+b)+c}²

= (a+b)² + 2(a+b).c +c²

= a²+2ab + b² + 2ac + 2bc + c²

=a² + b² + c² + 2(ab+bc+ac)

✅

Answer 2

Refer the attachment

Hope it helps you!