$${ \left( { x }^{ 2 } + \frac{ y }{ 2 } \right) }^{ 3 }$$
$\frac{\left(2x^{2}+y\right)^{3}}{8}$
$\frac{3\left(xy\right)^{2}}{4}+x^{6}+\frac{3yx^{4}}{2}+\frac{y^{3}}{8}$
