a) 2*3*7
--------- = _2_
3*49 7
b) 3+4
- ------ = _7_ =_1_
14 14 2
c)32-12
- ------- =_20_ = 2
10 10
d) 2^3*3^2
- ---------- =_3_
2^4*3 2
e) 3^10*2^15
------------- =_2²_=_4_
3^12*2^13 3² 9
f) 4^16
--------=_(2²)¹⁶_ =2³²_= 2²= 4
2^30 2³⁰ 2³⁰
g) 25^20
---------= _(5²)²⁰_ = _5⁴⁰_=_1_= _ 1_
5^42 5⁴² 5⁴² 5² 25
h) 10^15
---------= _10¹⁵_ = _10¹⁵_ = _1_
100^8 (10²)⁸ 10¹⁶ 10
i) 8^5
- ------ = _(2³)⁵_ =_2¹⁵_ = _1_
4^8 (2²)⁸ 2¹⁶ 2
j) 81^10
---------= _ (3⁴)¹⁰_ = _3⁴⁰_= 3⁴= 81
27^12 (3³)¹² 3³⁶
k) 25^7
---------= _(5²)⁷_ = _5¹⁴_ =_ 1_
125^5 (5³)⁵ 5¹⁵ 5
l) 49^25
- --------- =_(7²)²⁵_ =_7⁵⁰_ =_ 1_ = _1_
(7^4)^13 7⁵² 7⁵² 7² 49