Question

Third no. I want to know how to solve please tell me

Answer 1

Here,

4a^2 +4a+1/2a+1
= 4a^2 +2a+2a+1/2a+1
=2a(2a+1)+1(2a+1)/2a+1
=(2a+1)^2 / 2a+1
=2a+1

Hope it helps ya