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If A is a square matrix of order 2 such ...

If A is a square matrix of order 2 such that `A[(,1),(,-1)]=[(,-1),(,2)] and A^(2)[(,1),(,-1)]=[(,1),(,0)]` the sum of elements and product of elements of A are S and P, S + P is

A

-1

B

2

C

4

D

5

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