Question

prove that (3/2m+2/3n)²=4/9m²-9/4n²​

Answer 1

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

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

(3/2m)^2+2/3n)^2+2(3/2m)(2/3n)=9/4m^2+4/9m^2+2(6/6mn)=9/4m^2+4/9n^2+2mn

Please mark me the brainleast