John Fisher (1469-1535) was an English Catholicbishop who was excuted by Henry VIII for refusing to compromise his beliefs when Henry was forming the Protestant church.
For John Arbuthnot Fisher, British admiral, see Jackie Fisher.
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... 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.)
If the ...