A: ### Quick Answer

**The word "algebra" originally comes from the word "al-jabr" in Arabic, which means restoration or reunification.** "Al-jabr" was used to refer to the process of simplifying equations that is used in algebra.

The first known use of "al-jabr" to refer to mathematical reduction was by Abu Ja'far Muhammad ibn Musa al-Khwarizmi in the title of a treatise on mathematics in the 9th century. The word was borrowed by Medieval Latin and later by Middle English, at which time its spelling became "algebra." The mathematical term "algorithm" comes from the same Arabic roots. Algebra continues to describe the process of mathematical reduction in many languages.

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## What does quadratic mean?

A:According to Dictionary.com, the word "quadratic" is derived from the Latin word "quadratus" and means "square." In math, a quadratic refers to a polynomial where the highest degree of the term is two, which means the largest term in the polynomial is squared or raised to the second power.

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## What are some distinguishable permutations?

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Full Answer >**Examples of distinguishable permutations often include letter order in words, such as the number of ways in which the letters in the word "Mississippi" can be uniquely arranged.**Distinguishable permutations are also used for research, such as for diet or vaccination trials.Filed Under: - Q:
## Why is the symbol Z used to indicate integers?

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Full Answer >**The double struck symbol or letter Z is used to indicate integers because it comes from the German word "Zahl," which means "number."**It was first used as such in a book entitled "Elements of Mathematics: Algebra" first published in 1939.Filed Under: - Q:
## What were the main accomplishments of Kublai Khan?

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Full Answer >**The main accomplishments of Kublai Khan were the reunification of China, creation of a provincial administrative division, inception of a paper currency system, modernization and expansion of trade with the West and the promotion of arts and literature.**Kublai Khan was the grandson of the famous Mongol conqueror, Genghis Khan.Filed Under: