Question

[Jenny_2690]

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

Answer 1

[Nguyễn Lê Phước Thịnh]

\(=\dfrac{3^{14}\cdot5^4-3^{13}\cdot5^4}{3^{12}\cdot5^6+3^{12}\cdot5^6}\)

\(=\dfrac{3^{13}\cdot5^4\cdot\left(3-1\right)}{2\cdot3^{12}\cdot5^6}=\dfrac{9}{25}\)