Answer:
3x²
Explanation:
1) Find the pattern
In the grid we can see that each opposite terms multiply to get the space in the grid. Example: there was -3 and 3x so to fill in the grid the question has multiplied them together which got -9x
To apply it into the question we are given we need to multiply the x and the 3x to give the answer
2) Find the answer!
As we have figured out that you need to multiply we need to do so!
Hope this helps, have a great day!