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How do I complete the square for this problem?? It's on translating conic sections.

x^2-4x+y^2+2y=-1

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x^2-4x+y^2+2y=-1
x^2- 4x + 4 + y^2 + 2y + 1=-1 +4 + 1
(x-2)^2 + (y+1)^2 = 4

I assume you will recognize this as a circle.

x^=13

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