Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers)

Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers)

Selina Publishers Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers)

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APlusTopper.com provides step by step solutions for Selina Concise ICSE Solutions for Class 8 Mathematics Chapter 2 Exponents (Powers). You can download the Selina Concise Mathematics ICSE Solutions for Class 8 with Free PDF download option. Selina Publishers Concise Mathematics for Class 8 ICSE Solutions all questions are solved and explained by expert mathematic teachers as per ICSE board guidelines.

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Exponents Exercise 2A – Selina Concise Mathematics Class 8 ICSE Solutions

Question 1.
Evaluate:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 1
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 2
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 3
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 4
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Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 6
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 7

Question 2.
If 1125 = 3m x 5n; find m and n.
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 8

Question 3.
Find x, if 9 × 3x = (27)2x-3
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 9

Exponents Exercise 2B – Selina Concise Mathematics Class 8 ICSE Solutions

Question 1.
Compute:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 10
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 11
Solution:

Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 12
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 13
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 14
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 15
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 16
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 17
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 18

Question 2.
Simplify:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 48
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 19
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 21

Question 3.
Evaluate:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 22
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 23

Question 4.
Simplify:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 24
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 25.
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 26
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 27

Question 5.
Simplify:
(xa+b)a-b.(xb+c)b-c.(xc+a)
c-a
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 28

Question 6.
Simplify:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 49
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 29
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 50
Question 7.
(i) (a-2)-2. (ab)-3
(ii) (xny-m)× (x3y-2)-n
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 51
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 30
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 31
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 32
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 33

Question 8.
Show that:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 34
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 35

Question 9.
Evaluate:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 36
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 37

Question 10.
Evaluate:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 38
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 39

Question 11.
(m+n)-1 (m-1 + n-1) = (mn)-1
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 40

Question 12.
Prove that:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 41
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 42
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 43

Question 13.
Find the values of n, when:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 52
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 44
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 45

Question 14.
Simplify:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 46
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 2 Exponents (Powers) image - 47

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