1.

Equation of line common to pair of lines (p^(2)-q^(2))x^(2)+(q^(2)-r^(2))xy+(r^(2)-p^(2))y^(2)=0 and (l-m)x^(2)+(m-n)xy+(n-ly)^(y)=0 is

Answer»

`x-y=0`
`x+y=0`
`x=2y`
`2x=y`

ANSWER :A


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