Class 11 Mathematics 4-1.Complex numbers Integral power of iota, Algebraic operations and Equality of complex numbers

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If $\left|\begin{array}{cc}1-i & i \\ 1+2 i & -i\end{array}\right|=x+i y$, then $x$ is equal to

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A
$-2$
B
$-1$
C
$1$
D
$2$

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Class 11

Mathematics Questions

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4-1.Complex numbers

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Integral power of iota, Algebraic operations and Equality of complex numbers

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