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JEEMAIN and NEET
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Mathematics
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Class11
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Coordinate Geometry
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Q)
If the sum of the slopes of the lines given by $x^2-2cxy-7y^2=0$ is four times their product c has the value.
$\begin{array}{1 1}(A)\;-2\\(B)\;-1 \\(C)\;2\\(D)\;1 \end{array}$
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