1.105. Wykaż, że:

a)

1-log 3 (log, 3+log, 2+1).log₂ 2 3 = log₂3

b) 8+log, 5 +1= log, 16 +log, 5-2 log² 2

c) (log₂ 7+log, 2+2)-log, 2 log, 2+1 =log,14 d) (log 2-1).log₂ 5 log₂ 5+log, 2+2 =log 2 5