reducible and irreducible

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• Mar 21st 2010, 09:50 PM
Deepu
reducible and irreducible
Prove that there is no irreducible polynomial of degree 2 in C[x].
• Mar 21st 2010, 10:33 PM
Tinyboss
If z is complex, write $z=re^{i\theta}$. Then $\sqrt{z}=\sqrt{r}e^{i\theta/2}$ is also in C.