4logakar2+4logakar8=

[tex] {}^{4} log( \sqrt{2} ) + {}^{4} log( \sqrt{8} ) \\ {}^{4} log( \sqrt{2} )(2 \sqrt{2} ) \\ {}^{4} log2(2) \\ {}^{4} log4 \\ 1[/tex]
semoga membantu