Show that the matrix A = [[4,1],[-2,3]] ...

Show that the matrix `A = [[4,1],[-2,3]]` satisfy the equation `A^(2) - 7A + 14l = O`, where l is `2 xx 2` identity matrix and O is `2 xx 2` zero matrix. Using this equation , find `A^(-1)`.

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The correct Answer is:

`|(3//14, -1//14),(1//7,2//7)|`

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