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[" 63.If the focus of a parabola is "(-2...

[" 63.If the focus of a parabola is "(-2,a)(d)" none "],[" If the focus of a parabola is "(-2,1)" and the "],[" directrix has the equation "x+y=3" ,then its "],[" vertex is "],[[" (a) "(0,3)(-1,1/2)(c)(-1,2)(d)(2,-1)]]

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