## Algebraic expression

### A mathematical phrase that includes one or more variables.

An algebraic expression is a mathematical phrase that contains variables, constants, and mathematical operations. These expressions are used in algebra to represent unknown quantities or to create equations.

Algebraic expressions are composed of terms. A term is either a variable, constant, or the product of both, joined by mathematical operations such as addition (+), subtraction (-), multiplication (*), or division (/).

For example, the expression 3x + 5 contains two terms, 3x and 5. The term 3x is the product of 3 and x, and the term 5 is a constant. The plus sign indicates that the two terms are added together.

Algebraic expressions can also contain exponents, parentheses, and other mathematical symbols. For instance, the expression (2x + 1)^2 + 4x contains two terms within parentheses that are multiplied by each other, and then squared. The expression is then added to the product of 4 and x.

It is important to simplify algebraic expressions by combining like terms and simplifying any complex expressions. This allows us to manipulate algebraic expressions to solve equations and find solutions to problems.

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