Tính giá trị các biểu thức sau: 4.(1/4)^2+25.[(3/4)^3 : (5/4)^3 ]: (3/2)^3

* Hướng dẫn giải

$\begin{array}{l}4.{\left(\frac{1}{4}\right)}^2+25.\left[{\left(\frac{3}{4}\right)}^3:{\left(\frac{5}{4}\right)}^3\right]:\text{}{\left(\frac{3}{2}\right)}^3\\ =4.\frac{1}{16}+25{\left(\frac{3}{5}\right)}^3:{\left(\frac{3}{2}\right)}^3\\ =\frac{1}{4}+25.{\left(\frac{2}{5}\right)}^3=\frac{1}{4}+25.\frac{8}{125}=\frac{37}{20}\end{array}$