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Squares joining quadratics (Posted on 2010-02-24) Difficulty: 3 of 5
A and B are points on the graph y=x2+8x+7
C and D are points on the graph y=-x2+8x-7
and ABCD is a square.

Find all possible x-coordinates of point A

See The Solution Submitted by Jer    
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re: Four squares by analysis (spoiler) Comment 5 of 5 |
(In reply to Four squares by analysis (spoiler) by Harry)

When I thought up this problem I remember trying a lot of things to get the solutions to all be at least rational.  I could not manage it and still get four solutions.

  Posted by Jer on 2011-02-12 19:10:06

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