a circle c has the equation x^2 + y^2 -4x + 10y = k. find the center of te circle
you would first change the equaton into the circle equation therefore completing the square (x -2)^2 -4 + (y + 5)^2 -25 = know use the equation to deduce the center of the circle (x -2)^2 + (y + 5)^2 = k + 29therefore center is (2,-5)
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