Respuesta :

ghanami

Answer:

Step-by-step explanation:

hello :

x²+6x + y²– 12y = 36

completed to suqard :(x²+6x) + (y²– 12y) = 36 means :

(x²+6x+9)-9 + (y²– 12y+36)-36 = 36

(x+3)²+(y-6)² = 9².... standard form when the radius is : 9

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