Question

expand:- (3x +4y)^3
please do fast tomorrow is my exam

Answer 1

$\textbf{Answer is in Attachment !}$

Answer 2

its solved by (a+b)^3=a^3+3a^2b+3ab^2+b^
(3x+4y)^3=27x^3+47x^2y+144xy^2+64y^3