If A =[12ab] \left [ \begin{matrix} 1 & 2 \ a & b \end{matrix} ight ] A² =[0000] \left [ \begin{matrix} 0 & 0 \ 0 & 0 \end{matrix} ight ] then the values of a and b are:

Question

If A =[12ab] \left [ \begin{matrix} 1 & 2 \ a & b \end{matrix} ight ] A² =[0000] \left [ \begin{matrix} 0 & 0 \ 0 & 0 \end{matrix} ight ] then the values of a and b are:

Accepted Answer

গ. -1/2 and -1

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