Calculate
72
49
4^3 xx 4^5
48
6^7 / 6^5
62
(5^2)^4
5^8
82=2?
?=6
32 + 23
17
4^7 xx 4^2
4^8
y^7 / y
y^6
(2^3)^(-4)
2^(-12)
(2^5xx2^7)/2^3
2^9
5-2
1/25
v^4 xx v^7
v^11
(3^5) / (3^8)
3^(-3)
(f^4)^5
f^20
(4^5 xx4^3)/(4^2)
4^6
(-3)3
-27
g^(-5) xx g^3
g^(-2)
(28^3) / (4^3)
7^3
((4^3)^5)^2
4^30
(5^3)^2 xx 5^2
5^8
(1/2)-3
8
56 x 511 x 522
539
((6^7)^2)^2
628
(5^3)^3 xx 5^7
5^16