1.2log4(9)-log2(3)=2log2(3)-log2(3)=log2(3)2.3^[2log3(5)]=3^[log3(25)]=253.log10(1/10^x)=log10[10^(-x)]=-x4.2log10(√x)+3log10[x^(1/3)]=log10(x)+log10(x)=2log10(x)
