Question

simplify(a+b+c) (a+b-c)​

Answer 1

Answer:

a^2 + 2ab + b^2 - c^2

Step-by-step explanation:

consider the given question as

{(a + b) + c}{(a + b) - c}

so we have (a + b)^2 - c^2

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

hope it helps

Answer 2

Answer:

a2+b2-c2+2ab

Step-by-step explanation:

a2+ab-ac+ba+b2-bc+ca+cb-c2 (cancelled the opposite signs of same letters)

a2+b2-c2+2ab