Difficult:
It took me a while to follow example 6.5. They better explained the similar example 6.8.
Reflective:
Example 6.8 used a neat trick to show that [Q(sqrt(2),sqrt(3),sqrt(5)):Q(sqrt(2),sqrt(3))] = 2. It took me long enough just to accept that pq+3rs = 0 and the other similar equations. Noticing a relationship between possible solutions is just not a trick for my mind.
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