Oblicz: a)[latex]log_410+log_4 frac{2}{5}[/latex] b)[latex]log_248-log_23 =[/latex] c)[latex]log_5sqrt{10}-log_5sqrt{2}[/latex] d)[latex]frac{log_37}{log_349}[/latex]  

Oblicz: a)[latex]log_410+log_4 frac{2}{5}[/latex] b)[latex]log_248-log_23 =[/latex] c)[latex]log_5sqrt{10}-log_5sqrt{2}[/latex] d)[latex]frac{log_37}{log_349}[/latex]