Question

Tính :

\(\frac{3^6.45^4-15^{13}.5^{-9}}{27^4.25^3+45^6}\)

Answer 1

\(\frac{3^6.3^6.5^4-3^{13}.5^{13}.5^{-9}}{3^{12}.5^6+3^{12}.5^6}=\frac{3^{12}.5^4-3^{13}.5^7}{2.3^{12}.5^6}\) \(=\frac{3^{12}.5^4.\left(1-5^3\right)}{3^{12}.5^6.2}=\frac{-124}{5^2.2}=\frac{-62}{25}\) =2,48