atzirymartinez119 atzirymartinez119

03-06-2020
Mathematics

contestada

Determine the center and radius of the following circle equation:
x2 + y2 - 4x + 20y + 55 = 0

Respuesta :

05-06-2020

Step-by-step explanation:

x2 - 4x +4 -4 + y2 + 20y +100 -100 + 55=0

(x-2)2 + (y+10)2 =49

center:(2,-10)

r=7

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