Question

Simplify (a + b + c)(a + b - c)​

Answer 1

Step-by-step explanation:

hope it's help's you...

Answer 2

Answer:

a² + 2ab + b² – c²

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 + ab + ab – bc + bc – ac + ac + b² – c²

= a² + 2ab + b² – c² + 0 + 0

= a² + 2ab + b² – c²

hope it helps u..!