Question: Discrete Math 7. In question 6 , show that [1328] is a unit in the ring M2(Q) but not a unit in M2(R)

Discrete Math

Discrete Math 7. In question 6 , show that [1328] is a

7. In question 6 , show that [1328] is a unit in the ring M2(Q) but not a unit in M2(R)

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