KT 8 Maths

KSEEB Solutions for Class 8 Maths Chapter 10 Exponents Ex 10.7

KSEEB Solutions for Class 8 Maths Chapter 10 Exponents Ex 10.7

Karnataka Board Class 8 Maths Chapter 10 Exponents Ex 10.7

Question 1.
Use the laws of exponents and simplify
Answer:

KSEEB Solutions for Class 8 Maths Chapter 10 Exponents Ex. 10.7 1

Question 4.
Find the value of each of the following expressions.

(a). (32)2 – (-2)3)– (-(5)2)2
= 34 – (- 2 x – 2 x – 2)2 – (-52 )2
= 34 – (-23)2 – 54
= 81 – 26 – 625
= 81- 64 – 625
= 81 – 689
= – 608

(b). ((0.6)2)– ((4.5)0)-2
= (0.6)2 x 0 – (4.5)0 x -2
= (0.6)0 – (4.5)0
= 1 – 1
= 0

(c).
KSEEB Solutions for Class 8 Maths Chapter 10 Exponents Ex. 10.7 4

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