$$\frac{(a^{2})^{x+y}\times(a^{2})^{y+z}\times(a^{2})^{z+x}}{(a^{x}.a^{y}.a^{z})^{4}}$$
$\frac{\left(a^{2}\right)^{3x+2y+2}}{a^{36}}$
$\frac{3\ln(a^{2})\left(a^{2}\right)^{3x+2y+2}}{a^{36}}$
