Question

simplify (a+b+c)(a+b-c)​

Answer 1

Answer:

which class u are in

then I will be able to answer your question

Answer 2

Answer:

(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+ab+ab-ac+ac-bc+bc

a²+b²-c²+2ab