Question

Simplify (a + b + c)(a + b – c).

Answer 1

Step-by-step explanation:

By the multiplication of algebraic expressions.

Answer 2

Step-by-step explanation:

=(a+b+c)(a+b-c)

=a(a+b-c)+b(a+b-c)+c(a+b-c)

=a2+ab-ac+ab+b2-bc+ac+bc-c2

=a2+b2-c2+2ab

Here a2 means a square ,

b2 means b square ,

and c2 means c square.

2ab means two ab.

SORRY FOR THIS WRITING.