Question

2.
(a + b + c)(a + b + c ) - (b + c)​

Answer 1

Answer:

(a+b+c)(c+b−c)

Expand (a+b+c)(a+b−c) by multiplying

Expand (a+b+c)(a+b−c) by multiplying each term in first expression by each term in second expression

a²+ab-ac+ba+b²−bc+ca+cb−c²

a²+ab+ba+b²−ac+ca+cb−bc−c²

a²+2ab+b²−0+0−c²

a²+2ab+b²−c²

(a+b)²−c²

hope it was helpful