If A=[[a , b] ,[ b , a]] A^(2)=[[alpha ,...

If `A=[[a , b] ,[ b , a]] A^(2)=[[alpha , beta] ,[ beta , a]]` then

`alpha=2 a b, , beta=a^(2)+b^(2)`

`alpha=a^(2)+b^(2), beta=a b`

`alpha=a^(2)+b^(2), beta=2 a b`

alpha=a^(2)+b^(2), beta=a^(2)-b^(2)`

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