$$(\frac{1}{2}x^{2}+3y+\frac{3}{4}z)^{2}$$
$\frac{\left(2x^{2}+12y+3z\right)^{2}}{16}$
$\frac{x^{4}}{4}+\frac{3zx^{2}}{4}+3yx^{2}+\frac{9yz}{2}+\frac{9z^{2}}{16}+9y^{2}$
