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Chapter 1: Q. 1220 (page 198)

In the following exercises, identify whether each number is a real number or not a real number. 鈸� -64鈸� -81

Short Answer

Expert verified

Part (a) -64is not a real number.

Part (b) -81is a real number.

Step by step solution

01

Part (a) Step 1. Given information 

A number,-64

02

Part (a) Step 2. Identifying whether the number is real number or not

There is no real number whose square is-64. Therefore,-64 is not a real number.

03

Part (b) Step 1. Identifying whether the number is real number or not

Given number can be simplified as: -81=-9. Since, -9is a real number, -81 is a real number.

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Most popular questions from this chapter

Jeannette has \(5 and \)10 bills in her wallet. The number of fives is three more than six times the number of tens. Let t represent the number of tens. Write an expression for the number of fives.

In the following exercise, simplify the expression:5(-6)+7(-2)-3

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Translate from algebra into English:

(a)14鈮�27(b)19鈭�2鈮�8(c)12>4梅2(d)x鈭�7<1

Simplify:

a)8+3脳9b)(8+3)脳9.
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