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seraphim [82]
3 years ago
9

What are the vertex, focus, and directrix of the parabola with the equation x^2+y^2-8x+4y+4=0?

Mathematics
1 answer:
sattari [20]3 years ago
5 0
X^2+y^2-8x+4y+4=0 can be written as (<span>x- 4)² + (y+2)²-16-4+4=0, or 
</span> (<span>x- 4)² + (y+2)²=16, this is not a an equation of parabola, it is a circle's
</span>its center is (4, -2) and its radius r=4
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