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If one of the lines denoted by the line pair `a x^2+2h x y+b y^2=0` bisects the angle between the coordinate axes, then prove that `(a+b)^2=4h^2`

A

`(a-b)^(2)=4h^(2)`

B

`(a+b)^(2)=4h^(2)`

C

`4ab=h^(2)`

D

`b^(2)=4ah`

Text Solution

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The correct Answer is:
B
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