Hi there!
We know that the numbers must add up to 42. Let's use n to represent the missing numbers. First, we have one n. This is because it says a number, which we are starting with. Next, we have n^2. This is because it says the number's square, meaning that they are the same variable. Therefore, the equation is n + n^2 = 42.
Hope this helps!! :)
If there's anything else that I can help you with, please let me know!