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Suppose that 1 8 E1 1 E2 1 4 and E, E A = I. Express A as a product of elementary matrices. 1

Suppose that 1 8 E1 1 E2 1 4 and E, E A = I. Express A as a product of elementary matrices. 1 1 -8 8 () A 1 -8 (A) A (C) A = 4 1 -4 -4 1 1 (D) A = 1 1 1 1 -8 1 1 1 -8 (E) A = 4 (F) A (G) A 4 4 1 1 1 1 1 (H) A = 1 4

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