Question 38: Perform the calculation \( \mathrm{A}=-\frac{2 \mathrm{x}}{3}(15 \mathrm{x}-6 \mathrm{y}) \)
\(\begin{aligned} &\mathrm{A}=-\frac{2 \mathrm{x}}{3} \cdot 15 \mathrm{x}+\left(-\frac{2 \mathrm{x} }{3}\right)(-6 \mathrm{y}) \\ &\mathrm{A}=-10 \mathrm{x}^{2}+4 \mathrm{xy} \end{aligned} \)
===============