Question 673780
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Hi,
x^2+y^2+3x-4y+4=0 
x^2+3x + 9/4  + y^2-4y +4= -4 + 9/4 + 4
(x+3/2)^2 + (y-2)^2 = 9/4 ,  C(-3/2,2)  r = 3/2

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