RD Sharma - Mathematics

Book: RD Sharma - Mathematics

Chapter: 2. Powers

Subject: Maths - Class 8th

Q. No. 6 of Exercise 2.1

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6

By what number should 5-1 be multiplied so that the product many be equal to (-7)-1?

Let the number 5-1 shlould be multiplied by


According to the question:


5-1 = (-7)-1


[Using -n = ]



Therefore 5-1 should be multiplied by


Chapter Exercises

Exercise 2.1
Exercise 2.2
Exercise 2.3

More Exercise Questions

1

Express each of the following as a rational number of the form, where p and q are integers and q0:

(i) 2-3


(ii) (-4)-2


(iii)


(iv)


(v)

2

Find the values of each of the following:

(i)


(ii)


(iii)


(iv)

3

Find the values of each of the following:

(i)


(ii)


(iii)


(iv)

4

Simplify:

(i)


(ii)


(iii)


(iv)

5

Simplify:

(i)


(ii)


(iii)


(iv)

6

By what number should 5-1 be multiplied so that the product many be equal to (-7)-1?
7

By what number should be multiplied so that the product may be equal to ?
8

By what number should (-15)-1 be divided so that the quotient may be equal to (-5)-1?

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