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$toancapba@gmail.com\′s Photo$

19 Aug 10, 2:28PM

(1 reply)

$\frac{x^2-1}{x+1}+\sqrt{x^2-1}=1$

$thomas.hyrien\′s Photo$

30 Sep 10, 9:49AM

How do you display your "+" ?

I have "xplus;y" when I write "x+y"

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