Question

$( - \frac{2}{5} ) {}^{4} \div (\frac{2}{5} ) ^{2} - 8 \times (2 - \frac{2}{3} \times \frac{12}{3} )$
va rog

Answer 1

16/625 x 25/4 - 8 x (2 - 8/3)=
4/25 - 8 x (-2/3)=
4/25 + 16/3 =
(12+400)/75 =
412/75 =
5,49(3)

Answer 2

[tex]\it \left(-\dfrac{2}{5}\right)^4: \left(\dfrac{2}{5}\right)^2 -8\cdot \left(2-\dfrac{2}{3}\cdot \dfrac{12}{3}\right) = \left(\dfrac{2}{5}\right)^2 -8\cdot \left(2-\dfrac{8}{3}\right) = \\\;\\ \\\;\\ \dfrac{4}{25} -8\cdot\left(-\dfrac{2}{3}\right) = \dfrac{4}{25} + \dfrac{16}{3} = \dfrac{12+400}{75} = \dfrac{412}{75}[/tex]