Question

If the pairs of lines x2 + 2xy + ay2 = 0 and ax2 + 2xy + y2 = Ohave exactly one line in common, then the joint equation of the
other two lines is given by
(A) 312 + 8zy – 3y2 = 0
(B) 3x2 + 100y + 3y2 = 0
(C) y2 + 2xy - 3x2 = 0
(D) x2 + 2xy – 3y2 = 0​

Answer 1

Answer:

A

Step-by-step explanation:

( A ) 3x2 + 100y + 3y2 = 0

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