Question 1026883
Find:
a) (h,k) and radius r
b) Graph the circle


(x^2)+(y^2)+x+y-(1/2)=0 or (x^2)+x+(y^2)+y=(1/2)
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x^2+x+y^2+y=1/2
Complete the squares for x and y
x^2+x+1/4 + y^2+y+1/4 = 1/2+1/4+1/4 = 1
(x+1/2)^2 + (y+1/2)^2 = 1
(h,k) = (-1/2,-1/2)
r = 1
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c) Find intercepts, if any
x^2+x+y^2+y=1/2
y = 0 --> x^2 + x - 1/2 = 0
*[invoke solve_quadratic_equation 1,1,-0.5]
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Intercepts are (x1,0) and (x2,0)
By symmetry, the y-ints are (0,x1) and (0,x2)