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The directrix of a parabola is x + y + 4...

The directrix of a parabola is x + y + 4 = 0 and vertix is the point (-1,-1) . Find (i) the position of focus and (ii) the equation of the parabola.

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The correct Answer is:
(0,0)
`x^(2)+y^(2) -2xy - 8x - 8y - 16 = 0 `
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