a. 25 . 84 = 25 . 212 = 217
b. 256 . 1253 = 512 . 59 = 521
c. 32 . 95 = 32 . 310 = 312
d. 253 . 1254 = 56 . 512 = 518
e. 42 . 52 = 202
a,217
b,5^21
c,3^12
d,5^18
e,20^2
a) 25.84 = 25.(23)4 = 25.212=217
b) 256.1253 = (52)6.(53)3 = 512.59 = 521
c) 32.95 = 32.(32)5 = 32.310 = 312
d) 253.1254 = (52)3.(53)4 = 56.512 = 518
e) 42.25 = (4.5)2 = 202