Algebraic Expressions

Front

What is a variable in algebra?

Back

A variable is a symbol, often a letter, that represents a number in an algebraic expression.

Front

How do you evaluate an expression with a variable?

Back

To evaluate an expression with a variable, substitute the value of the variable into the expression and perform the arithmetic operations.

Front

What are the variables in the expression 5p + 4h - 2?

Back

The variables are p and h.

Front

What is the result of evaluating s^2 ÷ 2 when s = 4?

Back

The result is 8.

Front

How do you evaluate the expression 16/g when g = 4?

Back

Substitute g with 4 to get 16/4, which equals 4.

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols.

Front

What is the difference between a constant and a variable?

Back

A constant is a fixed value that does not change, while a variable can represent different values.

Front

What does it mean to simplify an algebraic expression?

Back

To simplify an algebraic expression means to combine like terms and reduce it to its simplest form.

Front

What are like terms in an algebraic expression?

Back

Like terms are terms that have the same variable raised to the same power.

Front

How do you combine like terms in the expression 3x + 5x - 2?

Back

Combine the like terms 3x and 5x to get 8x, resulting in 8x - 2.