Odpowiedź :
[tex]2log_{5}10 - \frac{1}{2}log_{5}16 = log_{5}10^{2} - log_{5}16^{\frac{1}{2}} = log_{5}100-log_{5}\sqrt{16} = log_{5}100 -log_{5}4 =\\\\=log_{5}\frac{100}{4} = log_{5}25 = log_{5}5^{2} = 2\\\\Odp. \ B.[/tex]
[tex]2log_{5}10 - \frac{1}{2}log_{5}16 = log_{5}10^{2} - log_{5}16^{\frac{1}{2}} = log_{5}100-log_{5}\sqrt{16} = log_{5}100 -log_{5}4 =\\\\=log_{5}\frac{100}{4} = log_{5}25 = log_{5}5^{2} = 2\\\\Odp. \ B.[/tex]