Assuming the equations are supposed to read
=25 , you can find the square root of both sides to find n.
![\sqrt{n^(2)}=√(25) \sqrt{n^(2)}=√(36)](https://img.qammunity.org/2019/formulas/mathematics/high-school/6mq0do01c8hoycdbtsa5rc9jjuabgykmsi.png)
The square root of 36 is 6, and the square root of 25 is 5.
n=5 and n=6
So, in Mr. Miller's class, there are 5 desks in each row.
In Mrs. Fernandez's class, there are 6 desks in each row.
Hope this helps :)