Question

Va roggg din sufletttDau coroana si 16 puncte Urgentttt!!!!

Answer 1

3)
$a)(\frac{4}{5})^2=\frac{16}{25}; \ b)\frac{(-3)^2}{8}=\frac{9}{8}; \ c)(-19)^3=(-19)^2*(-19) = \\= 19 * (-19) = -361 \Rightarrow \frac{7}{(-19)^3}=\frac{7}{-361} = -\frac{7}{361}; \\ d)(\frac{-11}{10})^2=\frac{(-11)^2}{10^2}=\frac{121}{100}=1,21; \\ \\ e)(-\frac{1}{2})^5=\frac{(-1)^5}{2^5}=\frac{-1}{32}=-\frac{1}{32}; \\ \\ f)(\frac{1}{-3})^4=\frac{1}{(-3)^4}=\frac{1}{81}; \ g) (\frac{-1}{6})^3=\frac{(-1)^3}{6^3}=\frac{-1}{216}; \\\\ h)(-1,1)^2=1,21; \ i)(-1,1)^3=(-1,1)^2*(-1,1)=1,21*(-1,1) = \\ =-1,331;$

$j)(-1,1)^4=(-1,1)^3*(-1,1)=-1,331*(-1,1)=1,4641; \\ k)[-0,(3)]^5=(-\frac{3}{9})^5=(-\frac{1}{3})^5=-\frac{1}{243}; \\ l)[-0,1(6)]^3=(-\frac{16}{90})^3=(-\frac{8}{45})^3=-\frac{512}{91125}; \\ m)(-2\frac{1}{2})^3=(-\frac{5}{2})^3=-\frac{125}{8}$