\(5\) x \(\left(-\dfrac{2}{5}\right)^2\) + 2 x \(\left(-\dfrac{2}{5}\right)\) + 4 x \(\left(-\dfrac{2}{5}\right)^0\)

\(25\) x \(\left(-\dfrac{1}{3}\right)^3\) + \(\dfrac{1}{5}\) - 2 x \(\left(-\dfrac{1}{2}\right)^2\) - \(\dfrac{1}{2}\)

( \(\dfrac{3}{2}\) ) ² x 5² - ( \(2\dfrac{1}{4}\) ) ³ : ( \(\dfrac{3}{4}\) )³ - 3

\(\dfrac{2}{3}\) - \(\dfrac{20}{9}\) + \(\dfrac{1}{4}\)