Properties of Exponents

a^n = a×a×a...    a^0=1 
a^m×a^n =a^m+n   a^m/a^n = a^m-n
a^-n = 1/a^n    (a^m)^n = a^mn
(ab)^n = a^n b^n     (a/b)^n= a^n/b^n 

  Properties of logarithms
logb M/N= logbM+ logbN
logb m/n = logbM- logbN  logbM^l = klogbM