Answer: The factorised form would be (3x²+y) itself.
Explanation:
Since we have given that

We need to find the factorisation of the above expression:
There are two terms:
1) 3x²
2) y
Factors of 3x² = 1,3,x,x
Factors of y = 1,y
As we can see that there is no common factor between them.
So, it can't be factorised any more .
So, the factorised form would be (3x²+y) itself.