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If a is Square Matrix Such that A2 = A, Then (I + A)³ – 7 a is Equal to - Mathematics

If A is square matrix such that A2 = A, then (I + A)³ – 7 A is equal to

(A) A

(B) I – A

(C) I

(D) 3A

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Solution

Answer: C

Concept: Types of Matrices
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APPEARS IN

NCERT Class 12 Maths
Chapter 3 Matrices
Q 15 | Page 101
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