Question

Expand (2a+b-c)² using identities

Answer 1

Answer:

Step-by-step explanation:

(2a)² + b² + (-c)² + 2(2a)(b) + 2(b)(-c) + 2(2a)(-c)

=4a² + b² + c² + 4ab - 2bc - 4ac

Hope it is clear......please mark it as the brainliest