$\frac{\cos\left(2x\right)}{2}$

$\lim_{x\to-8}\left(\frac{2x^2+5x-24}{x+8}\right)$

$\frac{32x^2-2}{4x+1}$

$\int_0^{\pi}\left(4\sin^4\left(x\right)\right)dx$

$2\left(x^4\right)^{\frac{1}{2}}$

$\frac{4}{3}-3x<-15$

$\left[-5-\left(\frac{9}{7-10}\right)\right]3.9+9\left(-9\right)$