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16 April, 05:52

What are the center and radius of the circle defined bt the equation x sqaured + y sqaured - 6x + 10y + 25 = 0?

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  1. 16 April, 06:21
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    Hello,

    x²+y²+6x+10y+25=0

    ==>x²+2*3x+3²+y²+2*5y+5²-9=0

    ==> (x+3) ² + (y+5) ²=3²

    Center is (-3,-5) and radius 3
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