Odpowiedź :
[tex]2log_{\frac{1}{2} }6 - 2 = log _{\frac{1}{2} }6^{2} - log_{\frac{1}{2} }\frac{1}{4} = log_{\frac{1}{2} }36 - log_{\frac{1}{2} }\frac{1}{4} = log_{\frac{1}{2} }(\frac{36}{\frac{1}{4} }) = log_{\frac{1}{2} }(36*4) = log_{\frac{1}{2} }144[/tex]