Question

Anybody pls help it's very urgent.Pls give me steps also

Answer 1

Hope it helps you..
Please Mark as Brainliest please please

Answer 2

, (a+b+c)2 – (a – b – c)2
=( a +b+c+ a-b-c) (a +b+c- a+b+c)
= 2a (2b+2c)
4a(b+c)