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in Mathematics by (70.5k points)

If A = [(α, 0), (2, 3)] and I = [(1, 0), (0, 1)], then A2 = 9I for

(a) α = 4

(b)  α = 3

(c) α = - 3

(d) no α

1 Answer

+1 vote
by (71.7k points)
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Best answer

The correct option (c) α = - 3

Explanation:

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