Algebraic Expressions

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables (like x or y), and operations (like addition, subtraction, multiplication, and division).

Front

What does it mean to evaluate an expression?

Back

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

Front

Evaluate the expression x^2 + 2x + 3 when x = 4.

Back

27

Front

What is the result of 7y - 3y when y = 2?

Back

8

Front

Evaluate a^2 - b^2 if a = 4 and b = 2.

Back

12

Front

What is the value of 2x + 3 + x^2 when x = 4?

Back

27

Front

What is 4x if x = 5?

Back

20

Front

What is a variable in algebra?

Back

A variable is a symbol (often a letter) that represents an unknown value in an expression or equation.

Front

What is a coefficient?

Back

A coefficient is a numerical factor in a term of an algebraic expression. For example, in 3x, 3 is the coefficient.

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 2x + 5, 5 is a constant.