Algebraic Expressions
x2 + 6x + 9
Above is an example of an algebraic expression. Algebraic expressions are expressions which contain terms, variables and coefficients, and constants.
Terms
Terms are the elements in an algebraic expression, separated by the arithmetic signs.
Example
A term may consist of variables and coefficients, or a constant.
Variables
The letters in a term (by extension, algebraic expression) are called variables.
Example
Coefficients
Coefficients are the numbers before variables.
Example
Constants
Constants are the terms that contain numbers only.
Example
