Question

The
expanded from of
(3n-y)2 is​

Answer 1

Answer:

9n^2+y^2-6ny

Step-by-step explanation:

formula----------->

-------------

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

(3n-y) ^2=(3n)^2+y^2-2(3n)(y)

=9n^2+y^2-6ny

Answer 2

Answer:

Formula of (a-b)^2

Step-by-step explanation:

(3n-y)^2. [(a-b)^2=a^2-2ab+b^2]

=(3n)^2-2(3n) (y)+ y^2

=9n^2-6ny +y^2