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Let A=([2,1,3],[1,1,2],[3,1,1]) and A^(-...

Let `A=([2,1,3],[1,1,2],[3,1,1])` and `A^(-1)=alpha A^(2)+beta A+gamma I`,then which of the following holds good ` (A) alpha+beta=1 (B) 3(alpha+beta+gamma)=10(C) 8(beta+gamma)=11 (D) 8(alpha+gamma)=3]]`

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