Exercise 21 Page 479

We are given two expressions and we want to determine whether they are equivalent. We should first identify the operation being performed. 13 * 1 and 1In this case, the terms are multiplied. One of the factors is 1. Let's consider the Identity Property.

According to the Identity Property the first expression is equal to 13. This means that the expressions are not equivalent. 13* 1 ? = 1 ⇒ 13 ≠ 1 *