Mathematics, 31.03.2020 19:24 wrharris95791

What is the radius of a circle whose equation is x2+y2+8x−6y+21=0?
2 units
3 units
4 units
5 units

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What is the radius of a circle whose equation is x2+y2+8x−6y+21=0?
2 units
3 units
...