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X is the symbol for multiplication, as in 2X2=4 X (or any other letter) is often used to represent an unknown quantity.
Algebra uses letters to represent unknown numbers.
A variable is usually used for that - for example, a single letter that represents the unknown quantity.
An unknown number represented by a letter or symbol is a variable.
It is the unknown variable
An algebraic expression uses a letter to represent an unknown quantity.
In mathematics, an unknown quantity represented by a letter is usually called a variable. Variables are used to symbolize values that can vary in an equation or formula. They allow us to write general expressions that can represent multiple possible scenarios.
Unknonwn quantity is any variable a,b,c or x,y
A variable.
VARIABLE
a variable.
x= the unknown
variable
X is the symbol for multiplication, as in 2X2=4 X (or any other letter) is often used to represent an unknown quantity.
An unknown variable
b
Algebra uses letters to represent unknown numbers.