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Frequently Asked Questions (FAQ)
What is (x^2+y^2+8y-16)/(x^2+y^2+8y+16)=9 ?
- The solution to (x^2+y^2+8y-16)/(x^2+y^2+8y+16)=9 is Ellipse with (h,k)=(0,-4),a=2,b=2