Question

give me a Answer plz l can not be understand​

Answer 1

Using the identity,
(a+b)^2 = a^2 + 2ab + b^2

Here,
a = 2/3m
b = 3/2n

(2/3m + 3/2n)^2 = (2/3m)^2 + 2 * 2/3m * 3/2n + (3/2n)^2

= 4/9m^2 + 2mn + 9/4n^2



I’ve attached a picture also if u don’t understand what I’ve typed, do refer..

Hope it helps