Sagot :
SOLUTION
- x²+y²+x-2y = -1
- x²+x+y²-2y = -1
- x²+x + 1/4 + y²-2y +1 = -1 + 1 + 1/4
- (x+ 1/2)² + (y - 1)² = 1/4
ANSWER
- (x+ 1/2)² + (y - 1)² = 1/4
Wherein the Center is at (-1/2,1) and the radius is 1/2
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