Question

please tell me the answer

Answer 1

Step-by-step explanation:

-a²-b²-c²

a²+b²+c²

this is the answer of your question please mark me brainleist please

Answer 2

(-a - b - c)²

We know that (x + y + z)² = a² + b² + c² + 2xy + 2yz + 2xx

Here x = -a, y = - b, z = -c

By substituting the values given :

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

= a² + b² + c² + 2ab + 2bc + 2ac

=> (-a - b - c)² = a² + b² + c² + 2ab + 2bc + 2ac