calculate $\displaystyle gcd(x^3 + 2x^2 + 3x - 1, 2x^2 - x - 1)$ in $\displaystyle F_{5}$

i know how to go about this question, im just a little confused...

does $\displaystyle 6x^2 \equiv 0$, because we are working in $\displaystyle F_{5}$?

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- Jun 16th 2011, 06:52 PM #1

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- Jun 16th 2011, 07:28 PM #2

- Jun 16th 2011, 07:47 PM #3