Algebraic Expressions Evaluation Flashcard

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. It does not have an equality sign.

Front

What does it mean to evaluate an algebraic expression?

Back

To evaluate an algebraic expression means to substitute the values of the variables into the expression and perform the operations to find a numerical result.

Front

How do you substitute a value into an algebraic expression?

Back

To substitute a value, replace the variable in the expression with the given number and then simplify the expression.

Front

What is the result of evaluating the expression x - 5 when x = 13?

Back

The result is 8.

Front

What is the result of evaluating the expression x^2 + 3 when x = 7?

Back

The result is 52.

Front

What is the result of evaluating the expression x^2 - 2 when x = 6?

Back

The result is 34.

Front

What is the result of evaluating the expression x^2 - 3 when x = 9?

Back

The result is 78.

Front

What is the result of evaluating the expression 6x + 1 when x = 8?

Back

The result is 49.

Front

What is the order of operations used when evaluating algebraic expressions?

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

What is a variable in an algebraic expression?

Back

A variable is a symbol, usually a letter, that represents an unknown value in an algebraic expression.