Evaluating Expressions

Front

What is the formula for the difference of squares?

Back

a² - b² = (a + b)(a - b)

Front

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

Back

12

Front

What is the distributive property in algebra?

Back

a(b + c) = ab + ac

Front

Evaluate the expression: 3(2x + z) when x = 8 and z = 2.

Back

54

Front

What does it mean to evaluate an expression?

Back

To calculate the value of an expression by substituting values for the variables.

Front

Evaluate the expression: 9a - ab + 5b when a = 2 and b = 7.

Back

39

Front

What is the order of operations in mathematics?

Back

PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

Evaluate the expression: 6 + 7b - 3a when a = 2 and b = 8.

Back

56

Front

What is a variable in algebra?

Back

A symbol used to represent an unknown value.

Front

Evaluate the expression: bc + 5a when a = 3, b = 4, and c = -6.

Back

-9