1.

If the equation \[2{{x}^{2}}-2hxy+2{{y}^{2}}=0\] represents two coincident straight lines passing through the origin, then \[h=\]

A. \[\pm \text{ }6\]
B. \[\sqrt{6}\]
C. \[-\sqrt{6}\]
D. \[\pm \text{ }2\]
Answer» E.


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