Q.63 Evaluate each expression聽63. -4... [FREE SOLUTION]

91影视

Chapter 1: Q.63 (page 10)

Evaluate each expression
63. $- \sqrt{4}$

Short Answer

Expert verified

Expression $- \sqrt{4}$ results into $- 2$

Step by step solution

- Meaning of a

The symbol $\sqrt{}$ is used to denote square root of a number.

Thus $\sqrt{a}$ denotes square root of $' a'$

- Find a whole number whose square is 4

Since, $2^{2} = 4$

So, a whole number whose square is 4 is 2

- Simplify -4

Since, square of 2 is 4

So, square root of 4 is 2, $\sqrt{4} = 2$ $\sqrt{4} = 2$

Multiply both sides by $鈭� 1$

$\begin{matrix} (鈭� 1) 脳 \sqrt{4} = (鈭� 1) 脳 2 \\ 鈭� \sqrt{4} = 鈭� 2 \end{matrix}$

Thus, value of $- \sqrt{4}$ is $- 2$

Unlock Step-by-Step Solutions & Ace Your Exams!

Full Textbook Solutions
Get detailed explanations and key concepts
Unlimited Al creation
Al flashcards, explanations, exams and more...
Ads-free access
To over 500 millions flashcards
Money-back guarantee
We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Recommended explanations on Math Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Year	Average CPI
1950	42.1
1960	29.6
1970	38.8
1980	82.4
1990	130.7
2000	174.0

91影视

Evaluate each expression
63. $- \sqrt{4}$

Short Answer

Step by step solution

- Meaning of a

- Find a whole number whose square is 4

- Simplify -4

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Discrete Mathematics

Decision Maths

Probability and Statistics

Geometry

Logic and Functions

Theoretical and Mathematical Physics

Study anywhere. Anytime. Across all devices.

91影视

Evaluate each expression63. -4

Short Answer

Step by step solution

- Meaning of a

- Find a whole number whose square is 4

- Simplify -4

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Discrete Mathematics

Decision Maths

Probability and Statistics

Geometry

Logic and Functions

Theoretical and Mathematical Physics

Study anywhere. Anytime. Across all devices.

Evaluate each expression
63. $- \sqrt{4}$