Straight LineMedium
Question
The equation 2x2 + 4xy - py2 + 4x + qy + 1 = 0 will represent two mutually perpendicular straight lines, if
Options
A.p = 1 and q = 2 or 6
B.p = -2 and q = - 2 or 8
C.p = 2 and q = 0 or 8
D.p = 2 and q = 0 or 6
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