If A=-120-111110, show that A2=A-1.

If $A = [\begin{matrix} - 1 & 2 & 0 \\ - 1 & 1 & 1 \\ 1 & 1 & 0 \end{matrix}]$ , show that $A^{2} = A^{- 1}$ .

Matching exercise

Match the items on the right to the items on the left.

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