Không có ý nghĩa!

\(\left(-\frac{10}{3}\right)^6\cdot\left(-\frac{6}{5}\right)^5=\left(-\frac{10}{3}\right)^5\cdot\left(-\frac{6}{5}\right)^5\cdot\left(-\frac{10}{3}\right)=4^5\cdot\left(-\frac{10}{3}\right)=-\frac{10240}{3}\)