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If the slope of one line is twice the sl...

If the slope of one line is twice the slope of the other in the pair of lines `a x^(2)+2 h x y+b y^(2)=0` then `8 h^(2)=`

A

`-9 a b`

B

`9 a b`

C

`7 a b`

D

`-7 a b`

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The correct Answer is:
B
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HIMALAYA PUBLICATION-Pair Of Lines-QUESTION BANK
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