If A and B are square matrices of the same order then (A + B)2 =? A. – InterviewSolution

1.

If A and B are square matrices of the same order then (A + B)2 =? A. A2 + 2AB + B2 B. A2 + AB + BA + B2 C. A2 + 2BA + B2 D. none of these

Answer»

Since A and B are square matrices of same order.

(A + B)² = (A+ B)(A + B)

= A² + AB + BA+ B²

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