Question

expand using indentities..​

Answer 1

Hope it helps. Be always happy.

Answer 2

Answer:

use idenity (a+b)^2=a^2+b^2+2ab

Explanation:

here,

(2a )^2+(1/b)^2+2 (2a)(1/b)

4a^2+2/(b)^2+4a/b.........this is ur answ.