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If 2x-ky +3=0 ,3x -y+1 =0 are conjugat...

If ` 2x-ky +3=0 ,3x -y+1 =0 ` are conjugate lines with respect to ` 5x^(2) -6y^(2) = 15 ` then k=

A

6

B

4

C

3

D

2

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A
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