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At least for myself and the original poster, the thread at

Finding roots of polynomials, negative square root

does not render correctly. From OPs post:

"yep tried reloading a few times, the explanation cuts off "there is one solution (the repeated root) and if b^2-4ac" (so you can see part of the markup is probably at fault as i assume this is mid sentence) - c'mon admins help us out! – Aran Mulholland 16 hours ago"

Interestingly it works fine on the preview page, and as far as I know the latex is correct.

Edit: Original is fixed now. The error occurs when using the typing the $\lt$ as opposed to using the latex \lt.

$a \lt b$ vs $a < b$

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Reproduced. It seems that while the Markdown doesn't process stuff between $...$, even the < and > are not converted to &lt; and &gt; at all (thus stripped out by the XSS filter) e.g.

0<5

$0<5$

$0<5$

5 < b

$5 < b$

$5 < b$


Edit: It is fixed. You need to edit your post to see the change.

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