मराठी

If A is a square matrix such that A2 = A, then (I + A)2 - 3A is ____________. -

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प्रश्न

If A is a square matrix such that A2 = A, then (I + A)2 - 3A is ____________.

पर्याय

  • I

  • 2A

  • 3I

  • A

MCQ
रिकाम्या जागा भरा

उत्तर

If A is a square matrix such that A2 = A, then (I + A)2 - 3A is I.

Explanation:

as (I + A)2 - 3A

= I2 + IA + AI + A2 - 3A

= I + A + A + A - 3A = I

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