Zadanie 1
a)
16^{-\frac{11}{8}}=(2^4)^{-\frac{11}{8}}=2^{-\frac{11}{2}}
b)
\frac{1}{2}*2^{50}=2^{-1}*2^{50}=2^{-1+50}=2^{49}
Zadanie 2
2log_34-2log_35+2=log_34^2-log_35^2+2=log_316-log_325+2=log_3(16:25)+log_39=log_3\frac{16}{25}*9=log_3\frac{144}{25}=log_35,76
Zadanie 3
(3\frac{3}{8})^{\frac{1}{3}}*2+(-2)^3*(\frac{9}{4})^{\frac{1}{2}}=(\frac{27}{8})^{\frac{1}{3}}*2-8*\sqrt{\frac{9}{4}}=
=\sqrt[3]{\frac{27}{8}}*2-\not8^4*\frac{3}{\not2^1} = \frac{3}{2}*2-12=3-12=-9