If \({\rm{A}} = \left( {\begin{array}{*{20}{c}} { - 2}&2\\ 2&{ - 2} \end{array}} \right)\), then which one of the following is correct?

1
A2 = - 2A
2
A2 = - 4A
3
A2 = - 3A
4
A2 = 4A

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