Question

(x+3y)^3

Expand this question

Answer 1

$3x + 9y$
Above one is the expansion.

Answer 2

(x + 3y)^3 
= (x + 3y)^2 × (x + 3y) 
= (x^2 + 6xy + 9y^2)(x + 3y) 
= x^3 + 6yx^2 + 9xy^2 + 3yx^2 + 18xy^2 + 27y^3 
= x^3 + 9yx^2 + 27xy^2 + 27y^3 [Answer]