Evaluate Algebraic Expressions

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 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

Evaluate: a² - b² when a = 4 and b = 2.

Back

12

Front

Evaluate: 2x + 3 + x² for x = 4.

Back

27

Front

Evaluate: 6a - 3d when a = 1 and d = 2.

Back

0

Front

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

Back

22

Front

What is the expression for the total cost of p CDs if each CD costs $14.25 and shipping is $4.50?

Back

The expression is $14.25p + $4.50.

Front

Find the total cost for ordering 4 CDs using the expression $14.25p + $4.50.

Back

$61.50

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 constant in algebra?

Back

A constant is a fixed value that does not change.