1)\( (x-2)^2+ (y+3)^2=9\)
\(centre (2,-3), \quad radius=3\)
2)\((x+4)^2+ (y-6)^2=16\)
\(centre (-4,6), \quad radius=4\)
3)\((x+5)^2+ (y+2)^2=17\)
\(centre (-5,-2), \quad radius= \sqrt{17}\)
4)\((x+7)^2= 5-(y+2)^2\)
\(centre (-7,-2), \quad radius= \sqrt{5}\)
5)\((x-3)^2=-(y^2+4y+4)+3\)
\(centre (3,-2), \quad radius= \sqrt{3}\)
6)\((x+1)^2=-y^2-6y-9+7\)
\(centre (-1,-3), \quad radius= \sqrt{7}\)
7)\((x-2)^2=-y^2-8y-15\)
\(centre (2,-4), \quad radius=1\)
8)\(x^2+10x+25=-y^2-12y-32\)
\(centre (-5,-6), \quad radius=2\)