[" 20) The value of "P" for which the eq...

[" 20) The value of "P" for which the equation "x^(2)+Pxy+y^(2)-5x-7y+6=0" renresent a pair of "],[" lines is "],[[" - "1)(5)/(2)," 2) "5," (3) "2," 4) "(2)/(5)]]

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