\(a.\) \(81=3\cdot3\cdot3\cdot3=3^4\)
\(b.\) \(81=9\cdot9=9^2\)
\(c.\) \(64=2\cdot2\cdot2\cdot2\cdot2\cdot2=2^6\)
\(d.\) \(100000000=10\cdot10\cdot10\cdot10\cdot10\cdot10\cdot10\cdot10=10^8\)
a) 81=3.3.3.3 ta đc 34
b) 81=9.9 ta đc 92
c) 64=2.2.2.2.2.2 ta đc 26
d)100 000 000=10.10.10.10.10.10.10.10=108
a,81=3^4
b,81=9^2
c,64=2^6
d,100000000=10^8