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ax^(2)+2hxy+by^(2)+2gx+2fy+c=0 represent...

`ax^(2)+2hxy+by^(2)+2gx+2fy+c=0` represents two parallel straight lines if

A

`sqrt((g^(2)-ac)/(h^(2)+a^(2)))`

B

`2sqrt((g^(2)-ac)/(h^(2)+a^(2)))`

C

`2sqrt((g^(2)-ac)/(a(a+b)))`

D

`sqrt((g^(2)-ac)/(a(a+b)))`

Text Solution

Verified by Experts

The correct Answer is:
C
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MODERN PUBLICATION-UNIT TEST PAPER NO. 2 (GEOMETRIES)-Select the correct answer
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