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The lines represented by 3ax^2 + 5xy + (...

The lines represented by `3ax^2 + 5xy + (a^2 - 2) y^2 = 0` are perpendicular to each other for

A

two values of a.

B

for all a.

C

for one value of a.

D

for no values of a.

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The correct Answer is:
A
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