Question

plz help to slove this question ​

Answer 1

Step-by-step explanation:

(x + 3y)²

using identify of (a+b)² = a² + b² + 2ab

= x² + 9y² + 6xy

(a + 1/5a)²

using same identity,

a² + 1/25a² + 2/5

Answer 2

hope it will help you and nice question