Relax

Respuesta :

Answer:

(2a+b)^2

4a^2 + 4ab + b^2

product=4

Answer:

4a²+b²+4ab

Step-by-step explanation:

(2a+b)²=(2a)²+(b)²+2×2a×b

(a+b)²=a²+b²+2ab

answer:- 4a²+b²+4ab