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Show that the lines joining the origin to the two points of intersection of the curves `ax^(2)+2hxy+by^(2)+2gx=0, a_(1)x^(2)+2h_(1)xy+b_(1)y^(2)+2g_(1)x=0` will be at right angles to one another if `g(a_(1)+b_(1))=g_(1)(a+b)`

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The correct Answer is:
`g_(1)(a+b)`
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