July 18th, 2017, 01:51 AM  #31 
Newbie Joined: Jul 2017 From: china Posts: 1 Thanks: 0 
b=(a^21)/2, c=b+1=(a^2+1)/2 c^2b^2=(c+b)(cb)=a^2*1=a^2 

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special, triangles 
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