Evidently Omar Khayyam (1048-1131) was quite the mathematician. He did groundbreaking work on finding geometric solutions to the cubic equation, which is all the more notable since he did not have a good system of notation to work with.
As an example, suppose you want to solve $x^3 + 5x + 1 = 0$. Substituting $y = x^2$, one obtains $x(y + 5) + 1 = 0$, and so the solution lies at the intersection of a parabola and a hyperbola, which can be easily graphed.
I was able to find this picture on Khayyam's Wikipedia page, which is possibly in Khayyam's own handwriting.
I would love to use it in a talk. But what precisely does this picture represent? Judging from the sources I quoted (among others), it seems possibly related to the solution to $x^3 + 200x = 20x^2 + 2000$, but it is not clear exactly how.
Do any MO users read Arabic or otherwise know what this picture is?