\(A=\frac{25^3.5^5}{6.5^{10}}\)
\(A=\frac{\left(5^2\right)^3.5^5}{6.5^{10}}\)
\(A=\frac{5^6.5^5}{6.5^{10}}\)
\(A=\frac{5^{11}}{6.5^{10}}\)
\(A=\frac{5}{6}\)
(Dùng phương pháp giảm ước)
\(=\frac{\left(5^2\right)^3.5^5}{6.5^{10}}\)
\(=\frac{5^6.5^5}{6.5^{10}}\)
\(=\frac{5^{11}}{6.5^{10}}\)
\(=\frac{5}{6}\)
VẬY \(A=\frac{5}{6}\)
A = \(\frac{25^3x5^5}{6x5^{10}}=\frac{\left(5^2\right)^3x5^5}{6x5^{10}}=\frac{5^6x5^5}{6x5^{10}}=\frac{5^{11}}{6x5^{10}}=\frac{5}{6}.\)