Your question is not too clear.
Are you looking for the greatest factor of 650 which is a perfect square?
650 = 2*5*5*13
so 5*5 = 25, and 25 would be the greatest perfect square factor
do the same thing for 1290
Let me know what your conclusion is.
Find the greatest perfect square for 650.
Bonus:
Find the greatest perfect square for 1290
1 answer