Đáp án:
$\dfrac{-72}{5}$
Giải thích các bước giải:
$\dfrac{ \bigg(\dfrac{-2}{3} \bigg)^3.(-0,75)^2.(-1)^5}{ \bigg(\dfrac{2}{5} \bigg)^2. \bigg(-\dfrac{5}{12} \bigg)^3}$
$=\dfrac{\dfrac{-8}{27}.\dfrac{9}{16}.(-1)}{\dfrac{4}{25}.\dfrac{-125}{1725}}$
$=\dfrac{\dfrac{8}{27}.\dfrac{9}{16}}{-\dfrac{5}{432}}$
$=\dfrac{1}{6}.\bigg(-\dfrac{432}{5}\bigg)$
$=\dfrac{-72}{5}$
