Question

Wykonaj działania :

a)log₃54+log₃1,5

b)log₂5+log₂25,6

c)log₂144-log₂9

d)log₃33-log₃11

Answer 1

a)log₃54+log₃1,5= log₃(54•1,5)= log₃81= 4

b)log₂5+log₂25,6= log₂(5•25,6)= log₂128= 7

c)log₂144-log₂9= log₂(144:9)= log₂16= 4

d)log₃33-log₃11= log₃(33:11)= log₃3= 1

Answer 2

a) log3 54+log3 1,5= log3 (54*1,5)= log3 81= 4

b) log2 5+ log2 25,6= log2 (5*25,6)= log2 128= 7

c) log2 144- log2 9= log2 144/9= log2 16= 4

d) log3 33- log3 11= log3 33/11= log3 3= 1