oblicz log5+log20= log8-log8000=
oblicz
log5+log20=
log8-log8000=
log5+log20=log(5*20)=log100=log10²=2 log8-log8000=log(8/8000)=log10⁻³ = -3
log5 + log20 = log(5 · 20) = log100 = 2 log8 - log8000 = log(8 : 8000) = log0,001 = - 3