Question: Question 4 ( 2 pts ) . Prove the following lemma. Lemma. If F 6 = { 0 , 1 , a , a 2

Question 4(2 pts). Prove the following lemma.
Lemma. If F6={0,1, a, a2, a3, a4} is a field, then for any y in {1, a, a2, a3, a4}, y + y =0.
Hint You might find the previous lemma in Q2 useful.

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