The value of k\nso that the equation 12 x^2-10 x y+2y^2+11 x-5y+k=0\nrepresents a pair of lines ...

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The value of k\nso that the equation 12 x^2-10 x y+2y^2+11 x-5y+k=0\nrepresents a pair of lines is \n-2\n (b) 2\r\n(c) 7 (d) -7
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