Evaluating Algebraic Expressions Using Substitution

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols (like +, -, *, /).

Front

What does it mean to evaluate an expression?

Back

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

Front

Evaluate the expression when x = 3: 2x² - 5

Back

13

Front

Evaluate b² + 4 when b = 3.

Back

13

Front

What is the first step in solving the problem: 12 ÷ 6 (3) + 8?

Back

Division.

Front

Evaluate 3x + 8 if x = 2.

Back

14

Front

Evaluate bc - 5a when a = 3, b = 4, and c = 6.

Back

9

Front

What is substitution in algebra?

Back

Substitution is the process of replacing a variable in an expression with a specific value.

Front

What is the order of operations in mathematics?

Back

The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), often abbreviated as PEMDAS.

Front

Evaluate the expression 5x - 2 when x = 4.

Back

18.