62.3 - Study Guide

Front

What is the result of the expression 2(x + 7)?

Back

2x + 14

Front

How do you write an algebraic expression for '42 less than a number x'?

Back

x - 42

Front

What is the equivalent expression for 4x + 3(5y - 2x)?

Back

15y - 2x

Front

What is the result of the expression 3(3x + 1)?

Back

9x + 3

Front

What is the equivalent expression for 9w - 5y + w + 11y?

Back

10w + 6y

Front

What is the distributive property in algebra?

Back

a(b + c) = ab + ac

Front

What does it mean to combine like terms?

Back

Combining like terms means to add or subtract terms that have the same variable raised to the same power.

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 a variable in algebra?

Back

A variable is a symbol, often a letter, that represents one or more numbers.

Front

What is the difference between an expression and an equation?

Back

An expression is a combination of numbers and variables without an equality sign, while an equation states that two expressions are equal.