Hello everyone, I need your help with two problems, I would make separate threads for them but both are pretty much the same thing. They are from Gelfand's Algebra book.
Problem 133: You know that . Compute (a) ; (b) .
I solved problem 133 with quadratic equation and got the numbers but, since in this book, I haven't learned how to use quadratic equation yet, I think that this has to be solved by other way, in a way which will also help me to prove the next problem.
Problem 134: You know that is an integer. Prove that is an integer for any
Thanks in advance.