= (54)5: (52)7 = 520:514 = 520 - 14= 56
2^5 . 8^4
= 2^5 .(2^3)^4
= 2^5 . 2^12
= 2^17
25^6 . 125^3
= (5^2)^6 . ( 5^3)^3
= 5^12 . 5^9
= 5^21
625^5 : 25^7
= (5^4)^5 : (5^2)^7
= 5^20 : 5^14
= 5^6
12^3 . 3^3
= (12.3)^3
= 36^3
a) \(2^5\cdot8^4=2^5\cdot2^{12}=2^{17}\)
b)\(25^6\cdot125^3=5^{12}\cdot5^9=5^{21}\)
c)\(625^5\cdot25^7=25^{10}\cdot25^7=25^{17}\)
d)\(12^3\cdot3^3=2^6\cdot3^3\cdot3^3=2^6\cdot3^6=6^6\)