Question

find the general term in the expansion of (x+2y)2​

Answer 1

Explanation:

$tr + 1 = 2cr \times {x}^{2 - r} \times {(2y)}^{r}$

Answer 2

(x + 2y)² = x² + 4y² + 4xy

By using the identity of:-

(a + b)² = a² + b² + 2ab