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April 19, 2014

April 19, 2014

Posted by **mumba** on Friday, March 30, 2012 at 2:48am.

Find the coordinates of the point where the circle crosses the x-axis

- maths -
**drwls**, Friday, March 30, 2012 at 3:22amy will equal 0 where the circle crosses the x axis.

x^2 +2x -1 = 0

x = (1/2)[-2 +/-sqrt8]

= -1 +/-sqrt2

= -2.414 and 0.414

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