Juliusz Brzeziński Galois teori genom övningar // Galois Theory Through Exercises by Juliusz Brzeziński

                A source where you can download this book is here.

 

                I read an earlier version ("2015"), written for students. 

                 An interesting problem caught my attention: on page 102, problem 16.79 (in the "2015" version it is page 87, problem 16.40). But without indications of a solution. I have made posts with this type of problem here, here and here.