Page 50 - MATHEMATICS COURSE FOR SECONDARY SCHOOLS BOOK 2

5. Simplify each expression, giving the answer in index form.
12.
(a) 23 4 (c) 323
72
6. Calculate the value of each expression.
(a) (23 􏰀 25)2 (c) (45 􏰀 4-3)6
(b) (57 􏰀 5-4)-2
(d) (73 􏰀 7-6)-2 7-5
42
Simplify each of the following:
7. a) 81 12 (c) 144- 12
8. (a) 8- 23 (c) 64- 16
9.
10.
11.
(b) 100 12 (d) 169- 12 (b) 27 23 (d) 16- 54
13.
(b) 32 5 (d) 634
72
44