NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.5

NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.5

NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.5 are the part of NCERT Solutions for Class 9 Maths. In this post, you will find the NCERT Solutions for Class 9 Maths Chapter 1 Number System Ex 1.5.



NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.5


Ex 1.5 Class 9 Maths Question 1.
Find:

Solution:
(i)
 64 = 8 × 8 = 82
 (64)1/2 = (82)1/2 = 82 × 1/2 = 8              (am)n = am × n]
(ii) 32 = 2 × 2 × 2 × 2 × 2 = 25
 (32)1/5 = (25)1/5 = 25 × 1/5 = 2               (am)n= am × n]
(iii) 125 = 5 × 5 × 5 = 53 
 (125)1/3 = (53)1/3 = 53 × 1/3 = 5            (am)n = am × n]

 

Ex 1.5 Class 9 Maths Question 2.
Find:

Solution:
(i)
 9 = 3 × 3 = 32
 (9)3/2= (32)3/2 = 32 × 3/2                   (am)n = am × n]

                           = 33 = 27

(ii) 32 = 2 × 2 × 2 × 2 × 2= 25
 (32)2/5 = (25)2/5 = 25 × 2/5               (am)n = am × n]

                              = 22 = 4

(iii) 16 = 2 × 2 × 2 × 2 = 24
 (16)3/4 = (24)3/4 = 24 × 3/4               (am)n = am × n]

                          = 23 = 8

(iv) 125 = 5 × 5 × 5 = 53
 (125)-1/3 = (53)-1/3 = 53 × (-1/3) = 5-1
                                                   1/5             
∵ a-n = 1/an ]

 

Ex 1.5 Class 9 Maths Question 3.
Simplify:

Solution:
      (i)
 22/3. 21/5 = 22/3 + 1/5 = 213/15                          ∵ am. an = am + n]

     (iv) 71/2. 81/2 = (7 × 8)1/2 = (56)1/2           ∵ am × bm = (ab)m]

 


Related Links:

NCERT Solutions for Maths Class 10

NCERT Solutions for Maths Class 11

NCERT Solutions for Maths Class 12

Please do not enter any spam link in the comment box.

Post a Comment (0)
Previous Post Next Post