a) 2^20*16 = 2^20*2^8 = 2^(20+8) = 2^28
b) 3^25*27 = 3^25*3^3 = 3^(25+3) = 3^28
c) 32*2^43 = 2^5*2^43 = 2^(43+5) = 2^48
d) 81*3^50 = 3^4*3^50 = 3^(4+50) = 3^54
e) 6^48*36 = 6^48*6^2 = 6^(48+2) = 6^50
f) 125*5^39 = 5^3*5^49 = 5^(3+39) = 5^42
EVERGREEN