Solve the quadratic equation by completing the square. (-x^2 + 6x + 10 = 0)

Answer 1

-x^2 + 6x + 10 = 0
-(x^2 - 6x) + 10 = 0
-(x^2 - 6x + 9) + 10 + 9 = 0
-(x-3)^2 + 19 = 0
(x-3)^2 = 19
x-3 = ±√19
x = 3±√19