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[" If "3x+4y+k=0" represents the equatio...

[" If "3x+4y+k=0" represents the equation of the tangent at the vertex of the parabola "],[16x^(2)-24xy+9y^(2)+14x+2y+7=0" then the value of "k," is "]

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If 3x+4y+k=0 represents the equation of tangent at the vertex of the parabola 16x^(2)-24xy+9y^2+14x+2y+7=0 , then the value of k is ________ .

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If 3x+4y+k=0 represents the equation of tangent at the vertex of the parabola 16x^(2)-24xy^(2)+14x+2y+7=0 , then the value of k is ________ .

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