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The equation x2 + y2 ? 2xy ? 1 = 0 represents which of the
following?

(1) Two vertical straight lines

(2) Hyperbola

(3) A circle

(4) Two parallel straight lines



The equation x2 + y2 ? 2xy ? 1 = 0 represents which of the following? (1) Two vertical straight ..

Answer / ali

( 2 ) Hyperbola

Is This Answer Correct ?    2 Yes 5 No

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