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If the equation of the asymptotes of the hyperbola 3x2 + 10xy + 14x + 22y + 7 = 0 is 3x2 + 10xy + 8y2 + 14x + 22y + c = 0 then the value of c − 7 is .....

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Since 3x2 + 10xy + 8y2 + 14x + 22y + c = 0 represent pair of lines, we have

Hence, c − 7 = 8.

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