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6x^(2)+hxy+12y^(2)=0 represents pair of ...

`6x^(2)+hxy+12y^(2)=0` represents pair of parallel straight lines, if `h` is

A

(a) `+-6sqrt(2)`

B

(b) `+-sqrt(2)`

C

(c) `+-12sqrt(2)`

D

(d) `+-sqrt(6)`

Text Solution

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The correct Answer is:
C
NA
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