$$\frac{216+w^32^6}{6+wz^2}$$

$$\frac{tan2a}{tan2a}$$

$$6u^5+9u^3-1\sqrt{3u^2}$$

$$x^2-4-y^2=9$$

$$\left(-\frac{7}{5}\sqrt{1.451584}-\frac{25}{12}\ln\left(-\frac{3}{25}+\sqrt{1.451584}\right)\right)$$

$$25a^210ab4b^2$$

$$\frac{m^{18}-n^{18}}{m^3-n^3}$$