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JEEMAIN and NEET
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Mathematics
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Class12
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Determinants
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If $A=\begin{bmatrix}1&x\\x^2&4y\end{bmatrix}$ and $B=\begin{bmatrix}-3&1\\1&0\end{bmatrix}$ and adj$(A+B)=\begin{bmatrix}1 &0\\0&1\end{bmatrix}$ then values of $x$ and $y$ are
$(a)\;1,1\qquad(b)\;\pm 1,1\qquad(c)\;1,0\qquad(d)\;None\;of\;these$
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