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From the equations which represents the...

From the equations which represents the following Pair of lines
2x - 3y + 1 = 0 , 2x + 3y + 1 = 0

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2x - 3y + 1 = 0 , 2x + 3y + 1 = 0
(2x - 3y +1) (2x + 3y +1) = 0
or, `(2x +1)^2 - 9y^2` = 0
`4x^2 + 1 + 4x - 9y^2 = 0`
`4x^2 - 9y^2 + 4x + 1 = 0`
which represents a pair of lines.
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