- #1
chaotixmonjuish
- 287
- 0
Show that the polynomial x^2+1 is irreducible in Q[x].
Hint: If not, it must factor as (ax+b)(cx+d) with a,b,c,d in Q. Show that this is impossible.
So I got this far:
ac =1
ad+bc=0
bd=1
I'm not sure how to go further than this.
Hint: If not, it must factor as (ax+b)(cx+d) with a,b,c,d in Q. Show that this is impossible.
So I got this far:
ac =1
ad+bc=0
bd=1
I'm not sure how to go further than this.