Thank you for your feedback,
I have attempted to make the improvements mentioned and I hope they are suitable.
thank you for informing me about test.expect, I didn't know it existed.
I don't know why that fixed test was considered missing, but I will still include it.

thank you, I have edited my tests to use copies of the original dictionary instead of using the original dictionary, which should resolve my mistake

I just noticed another mistake that was allowing return [] to cause tests to pass, this mistake has been corrected

I made a mistake when creating a test that lead to it always returning true, the test has been fixed, so the random tests should work now

this answer doesn't even work it just got lucky that on the attempt there were no instances of the variable having a coefficient of -1 with an even exponent. I fixed the problem in my second submission, just found it funny that this incorrect answer was accepted