Algebraic Expressions

Front

What is a variable in algebra?

Back

A variable is a symbol, often a letter, that represents a number that can change or vary.

Front

What is an algebraic expression?

Back

An algebraic expression is a combination of numbers, variables, and operations (like addition, subtraction, multiplication, and division).

Front

Back

9

Front

Back

22

Front

Back

8

Front

What is the result of the expression 2x + 3 + x^2 for x = 4?

Back

27

Front

What are the coefficients in the expression 3x^2 + 4x + 5?

Back

3 and 4 are the coefficients.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with numbers.

Front

What is the difference between an equation and an expression?

Back

An equation states that two expressions are equal, while an expression does not have an equality sign.

Front

What is the degree of the polynomial 4x^3 + 2x^2 + x?

Back

The degree is 3, which is the highest exponent of the variable.