How to identify the center and radius of the circle ( x + 3 ) 2 + ( y - 8 ) 2 = 16 ?

Question

How to identify the center and radius of the circle                     (        x        +        3        )            2        +                  (        y        -        8        )            2        =    16  ?

gelo1368m6 · Accepted Answer

Given:                     (        x        +        3        )            2        +                  (        y        -        8        )            2        =    16  The common shape of a circle                     (        x        -        h        )            2        +                  (        y        -        k        )            2        =          r      2      , where center is             (      h      ,      k      )       and       r   = radius.From the given equation                     (        x        -        -        3        )            2        +                  (        y        -        8        )            2        =    16   to get a positive value, there must be a negative.  This means the center is             (      -      3      ,      8      )      Radius       =                  16              =    4

How to identify the center and radius of the circle (x+3)^2+(y-8)^2=16?

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