Algebraic Expressions

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 3x + 2 is an algebraic expression.

Front

What does the term 'variable' mean in algebra?

Back

A variable is a letter used to represent a number value in an expression or an equation.

Front

What are the four basic operations in mathematics?

Back

The four basic operations are addition, subtraction, multiplication, and division.

Front

Simplify the expression: 3x + 4x.

Back

7x.

Front

What is the result of combining like terms: 5a + 2b - 3a + 4?

Back

2a + 2b + 4.

Front

Evaluate the expression when a = 15: 2(a - 5) + 2.

Back

22.

Front

What is the coefficient in the term 7x?

Back

The coefficient is 7, which is the number multiplying the variable x.

Front

What is a constant in an algebraic expression?

Back

A constant is a fixed value that does not change. For example, in the expression 3x + 5, the number 5 is a constant.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with their given values.

Front

What is the difference between an equation and an expression?

Back

An equation states that two expressions are equal, while an expression is a combination of numbers, variables, and operations without an equality sign.