Exercise
To which subfield of C is Q[X]/(X2 + X + 2) isomorphic?
Q(
(-7))
Q(2)
Q(5)
Right! Make a morphism Q[X] -> C that sends
X to (-7), determine the kernel
and apply the theorem.
(-7), determine the kernel
and apply the theorem.
No. Compute the zeros of the polynomial.
No.
Compute the zeros of the polynomial.