Suppose (B - C) D = 0, where B & C are m x n matricies and D is invertible. Show that B = C.

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Q: Invert the following matrix 3x – 2y = 9 -x + 3y = 3

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Q: (a) The matriz 1 3 -1 0 5 3 0 2 is invertible. Find A- by any method you know.

Q: 2. (2.3 #68) Prove that if A, B, and C are square matrices and ABC = I, then B is invertible and B-¹…

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