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If $A = [\begin{array}{cc} ab & b^{2} \\ - a^{2} & - ab \end{array}]$ then A is

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Correct option is C

A=abb2−a2−ab A2=abb2−a2−ababb2−a2−ab =a2b2-a2b2a b3-a b3-a3b +a3b -a2b2+a2b2=0000

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If A=abb2−a2−ab then A is

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If $A = [\begin{array}{cc} ab & b^{2} \\ - a^{2} & - ab \end{array}]$ then A is