The World Chess Champion is generally considered to be the best Chess player in the world. The title is currently held by Vladimir Kramnik, and before him, was held by Garry Kasparov. In the 1970sBobby Fischer became the World Chess Champion in a very exciting and controversial Chess game.
... a repeated solution x, and this solution is real. (Geometrically, this means that the parabola described by the quadratic equation touches the x-axis in a single point.)
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