Combine the terms in these expressions


$\displaystyle \left(\vphantom{ e^{x}}\right.$ex$\displaystyle \left.\vphantom{ e^{x}}\right)^{{y}}_{}$ 3 ln x sin x sin y $\displaystyle \left(\vphantom{ 2^{x}}\right.$2x$\displaystyle \left.\vphantom{ 2^{x}}\right)^{{y}}_{}$