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Answer In 1637, a very important book was published in France by Rene Descartes. he used the letter 'x', 'y','z' to stand for the unknown amounts in his maths problems. his book became very popular. other mathematicians followed his practice & started using the letter 'x' to denote the unknown.

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Q: In maths why 'x' denotes the unknown?
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Related questions

What does roman numeral x stand for?

in maths it denotes as10


What does x in maths stand for?

An unknown number.


What branch of maths solves for x?

It is usually algebra whereas x is an unknown variable.


What branch of maths involves solving on x?

In algebra whereas x is usually the unknown variable to be solved.


A symbol that stands for an unknown quantity?

In maths the symbols x and n are usually used to represent an unknown quantity. These may be referred to as a variable.


What is maths c?

In maths lower case c is a constant and denotes the speed of light


What does x equals in math?

the curvy 'x' in maths stands for an unknown number. So 'x=2+3', doesn't tell us what x is, but we can work it out. (x=5 in this case)


How is Algebra done?

Algebra is the basis of maths you can use it to solve unknown terms such as x. For example: 3x - 3 = 0 3x = 3 x = 1


What does unkown mean in maths?

Usually in algebra the term "unknown" is used for a variable ( commonly designated as x ) you are trying to solve for. For instance the mathematical expression 2 + x = 5 may be presented to the student as a problem. The answer is to solve for the unknown or x. The solution would be x = 3


In Maths how do you work out algebra?

You have to find out what the unknown number is. Example: x= 2y-4 y=12 What this is saying is you have to find out what x is if y is 12. So the sum reads 2x12-4. X=20


What is the difference between 2x and 2n?

This depends entirely on the context, but usually, an x denotes an unknown amount in an expression, while n denotes where a term is in a sequence. Examples: I have x amount of apples. My sister has twice that amount. How many does she have? 2x A sequence goes 1,2,3,4... etc. The term "n" is a certain amount. Which term is twice that amount? 2n This is how they are usually used, but they can also be interchangeable if you want to use them interchangeably. x and n both just mean "an unknown value".


What is n worth in maths?

Ah ha! In algebra, a letter stands for an unknown value! Some of the most common letters used in algebra are: x, y, n, and p. Some might say 'n' is an uNknown number! haha