Question

(2a+3b)
whole square is find expansion

Answer 1

(2a+3b)^2

(2a)^2+(3b)^2+2(2a)3b. [(a+b)^2=a^2+b^2+2ab]

4a^2+9b^2+12ab

Answer 2

(2a+3b)² = 2a²+2*2a*3b+3b²

= 4a²+12ab+9b²

I hope this might helps you.