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Chapter 1: Q. 1.100 (page 69)

Simplify:(a)(-7)2(b)-72

Short Answer

Expert verified

The solutions of (a) and (b) are49and-49respectively.

Step by step solution

01

Part (a) Step 1. Given information

Expression:(-7)2

02

Part (a) Step 2. Calculation

We have,

(-7)2 =(-7)(-7)=49

Therefore, the solution is49

03

Part (b) Step 1. Given information

Expression:-72

04

Part (b) Step 2. Calculation

We have,

-72=-(7.7)=-49

Therefore, the solution is-49

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