$\frac{6x^3+18x^2-2x+5}{3x^2-4}$

$y=-\sqrt{4d^{-2}\cos\left(x\right)-4d^{-2}\sin\left(x\right)+4d^{-2}}$

$\log\left(\frac{r\sqrt{7}}{s^2}\right)$

$2x^3\:-\:11x^2+10x\:+\:8$

$\left(7x^6+4x^{\text{4}}\right)\left(7x^{6-\:4x^4}\right)$

$u^2-4u+3$

$\left(3xy+5\right)+\left(7xy-9\right)$