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it's on the page:
https://www.cut-the-knot.org/wiki-math/index.php?n=MathematicalOlympiads.USA1984Problem1
In the line after "Expanding the equation we have" the expression
(...)x
is missing.
You can also see the Description of the page, but that's a minor problem.
Kind regards
Chris
if you write it this way then
-<...>x is correct and not "+"<...>x.
Sorry, my mistake.
The mistake is obviously mine.
for a short moment you can see a few lines directly below the headline, https://www.cut-the-knot.org/pythagoras/1331Sangaku.shtmlbut then they disappear behind Google ads.
Here you recommendhttps://www.cut-the-knot.org/books/Reviews/index.shtmla book by G. Suri and H. Sing Bal. However, if you click on the cover you get linked to a wrong book.
Here I foundhttps://www.cut-the-knot.org/arithmetic/algebra/HistoricalRemarks.shtml"Jean Le Rond d'Alembert, in his Encyclopđ_e..."and"Gauss, who gave a proof of the Fundamental Theorem of Algebra in 1799, thought (1925)..."I think "(1825)" is correct.
Regards
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