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1]=
log (0,4) 2³-log (0,4)3*log(3)125=
log (0,4)8- log (0,4)125 = wzór ; log (a)b*log (b) x=log (a) x
log (2/5) 8/125= x wzór : log (a)b-log (a)c=log (a(b/c)
(2/5) do potegi x= 8/125
(2/5) do potegi x=(2/5)³
x=3 = wynik
3]=
log (4)9* log(3)128=
log (4) 3²*log (3)128=2 log (4)3*log (3)128=2*log (4)128=log(4)128²=log(4)16384=x
4 do potegi x=4 do potegi 7
x=7
2]=
log (5) 4 do potegi 1/2* log (2) 30-log (5)6=
log (5) √4* log (2)30-log(5)6=
log (5)30-log (5)6=log(5) 30/6=log(5)5=1
4]=
log (1/5) 7* log(7)625=log (1/5)625=x
(1/5) do potegi x=625
5 do potegi -x=5 do potegi 4
x=-4