Answer:
See below
Step-by-step explanation:
1. 11^2
2. No
3. 18^2
4. 4^2
5. 9^2
6. No
7. 20^2
8. No
9. 15^2
Hope that helps! :)
Answer:
First get the formula for your pattern in the form of TN. Where d represents your difference and a represents your first term. Then equate the -401 to your formula and solve for n
b=3
I found this out by subtracting and adding on both sides.

First we'll multiply the second equation by -2

Now let's add the new equation and the first one.

We found y's value. We'll plug it in one of the equations to find x's value.

Solution ;
(9, -6)