Answer:
(6y+1)(6y-1)
Explanation:
To do this question you must know what Difference of Two Squares is.
The Difference of Two Squares is two terms that are squared and separated by a subtraction sign.
You can simplify them like this below
a²- b² = (a+b)(a-b)
36y²-1
36y² can become 6y×6y.
1 can become 1×1.
So, plugging it into the formula above, you will get
(6y+1)(6y-1)