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2.log₅6-3(log₅2+log₅3)/log₅6=log₅6-3*(log₅(2*3))/log₅6=log₅6-3log₅6/log₅6=log₅6-log₅6³/log₅6=log₅6-log₅216/log₅6=log₅(6:216)/log₅6=log₅(1/36)/log₅6=log₆(1/36)=-2
3.2log₃4-3log₃12/3+log₃4=log₃4²-log₃(12/3)³+log₃4=log₃16-log₃64+log₃4=log₃(16:64*4)=log₃1=0
4.5log₅18-4log₅2-9log₅3/log₅18-log₅3=log₅18⁵-log₅2⁴-log₅3⁹/log₅18-log₅3=log₅1889568-log₅16-log₅19683/log₅(18/3)=log₅(1889568:16:19683)/log₅6=log₅6/log₅6=1
/ jest to kreska ułamkowa
zad.2.
1.log10+log100-log1000=log(10*100/1000)=log1=0
2.5log₂½-2log₂√²+3log₂4=5*(-1)-2*(1/2)+3*2=-5-1+6=0
3.log½ ⅛+3log½2-log½8=3+3*(-1)-(-3)=3-3+3=3
4.5log₄2-2log₄4+log₄½=log₄2⁵-log₄4²+log₄½=log₄32-log₄16+log₄½=log₄(32:16*1/2)=log₄1=0
5.log10+½log100+⅓log1000=1+1+1=3
6.3log₇2+log₇56-2log₇8=log₇(2³*56:8²)=log₇7=1
7.2log₁₂2+log₁₂3=log₁₂(2²*3)=log₁₂12=1
8.¼log₃6+½log₃2-0,25log₃24=log₃(6^(1/4)*2^(1/2)/24^(1/4))=log₃((6/24)^(1/4)*√2)=log₃(⁴√1/4 * √2)=log₃(⁴√1/4 * ⁴√4) = log₃1=0
9.3log5+2log2½-log¼+5log2 to zostawię dla Ciebie, możesz spróbować rozwiązać. W razie pytań możesz pisać.