Definition Of Expression In Math With Example

An expression is a representation of a value.

Definition of expression in math with example.

Numbers symbols and operators such as and times grouped together that show the value of something. For example the formula for the area of a circle a π r2 gives the dependent variable a the area as a function of the independent variable r the radius. The following diagram gives an example of algebraic expression. They only differ in their coefficients.

An expression can be arithmetic algebraic polynomial and analytical. In algebra we begin to see variables or letters that are used to represent numbers. The following diagram shows some examples of like terms. For example variables and or numerals that appear alone or in combination with operators are expressions.

All variables must have a coefficient a. Definition of expression in mathematics the expression is defined as a phrase that groups together numbers constant letters variables or their combination joined by operators to represent the value of something. An expression is a sentence with a minimum of two numbers and at least one math operation. Example of a variable expression an example of a variable expression or an algebraic expression is 5x 7 5 x 7 evaluating a variable expression.

An example of a mathematical expression with a variable is 2 x 3. This math operation can be addition subtraction multiplication and division. The structure of an expression is. Scroll down the page for more examples.

Many widely used mathematical formulas are expressions of known functions. Like terms are terms that have the same variable part i e. An algebraic expression consisting of two or more like terms can be simplified by combining like terms. An expression is a mathematical phrase that combines numbers and or variables using mathematical operations.

Expression number math operator number. In these lessons we will learn what variables constants terms expressions and coefficients are in algebra. Illustrated definition of expression.