Question

Simplify (a + b + c)(a + b - c)


please show the properties while solving.

Answer 1

Answer:

$(a + b + c)(a + b - c) \\ = {(a + b)}^{2} - {c}^{2} \\ = {a}^{2} + {b}^{2} + 2ab - {c}^{2}$

Hope it helps you.

plz Mark it as brainliest.

And follow me

Answer 2

a^2 - b^2= (a+b)(a-b)

(a+b+c)(a+b-c)=(a+b)^2 - c^2

Now by using identities (a+b)^2= a^2+b^2+2ab

(a+b)^2 - c^2= a^2+b^2+2ab-c^2

Hopefully it’s helpful for you

Please mark me as brainliest
Thanks