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यदि A एक वर्ग आव्यूह इस प्रकार है कि A^2 = A, तो (I + A)^3 – 7A बराबर है

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यदि A एक वर्ग आव्यूह इस प्रकार है कि A2 = A, तो (I + A)3 – 7A बराबर है

(अ) A
(ब) I – A
(स) I
(द) 3A

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सही विकल्प है (स) I

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