The science of the Western Renaissance was indeed introduced from the translation of Arabic academic books. From the word "geometric algebra" in English, we can see that al is an definite article in Arabic, and there are obvious words such as alkali, alcohol, algorithm and almanac.

Even the word zero zero comes from Arabic sifr. However, Arab academic books were also translated from academic books in India, Persia, Greece, Rome and many other regions through the great translation movement in the Middle Ages. Chemical chemistry, from alchemy, from Arabic? Al Kimia,

But this root comes from ancient Greece, a chemical treatment. This is actually just a statement about the X letter. Just a symbol, without any specific meaning, just a symbol representing the unknown.

You can use y, z or a, b, c b, c, and it is only used because a mathematician feels pleasing to the eye when solving problems, and keeps using it when it is convenient. In advanced mathematics, chemistry and physics, there are still many letters indicating the unknown, some are abbreviations of names, some are just for convenience, and some are habits … Now many disciplines use X to indicate the unknown, just because they are used to it …