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RD Chapter 5 Algebra of Matrices Ex 5.3 Solutions

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Question - 62 : -

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Question - 65 : -

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Question - 67 : -

Let A and B be squarematrices of the order 3 × 3.

Is (AB)2 =A2 B2? Give reasons.

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Question - 68 : -

If A and B be squarematrices of the same order such that AB = BA, then show that (A + B)2 = A2 + 2AB + B2.

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