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JEE Main 2017Medium

Q.The equation x2+2xy+y24x4y+4=0x^2 + 2xy + y^2 - 4x - 4y + 4 = 0 represents

a
pair of parallel lines
b
coincident lines
c
perpendicular lines
d
none

Correct Answer: Option B

The correct solution involves applying the fundamental concept to derive the final value step by step...

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