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JEEMAIN and NEET
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Mathematics
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Class11
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Complex Numbers and Quadratic Equations
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Q)
The value of $b$ for which the eqns., $x^2+bx-1=0,\:x^2+x+b=0$ have one common root is
$\begin{array}{1 1} \sqrt 2 \\ - \sqrt 2 \\ \sqrt{3 i} \\ \sqrt {5 i} \end{array} $
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