Biểu thức \(Q=\frac{2:4^{-2}+\left(3^{-2}\right)^3\left(\frac{1}{9}\right)^{-3}}{5^{-3}.25^2+\left(0,7\right)^0.\left(\frac{1}{2}\right)^{-3}}\) rút gọn bằng
\(\frac{1}{8}\). \(\frac{33}{5}\). \(\frac{33}{13}\). \(\frac{32}{13}\). Hướng dẫn giải:\(Q=\frac{2:4^{-2}+\left(3^{-2}\right)^3\left(\frac{1}{9}\right)^{-3}}{5^{-3}.25^2+\left(0,7\right)^0.\left(\frac{1}{2}\right)^{-3}}\)
\(=\frac{2.4^2+\left(\frac{1}{9}\right)^3\left(\frac{1}{9}\right)^{-3}}{\frac{1}{5^3}.5^4+1.2^3}=\frac{32+1}{5+8}=\frac{33}{13}\).