$x\left(\frac{sin\:x-xcosx}{3x^2}\right)$

$\left(\:-\:8:\:2\:-\:4:\:2\:\right)$

$2+5\cdot6-5+12-4\cdot8$

$5+\ln\left(x+4\right)=7$

$\int\left(\frac{\cos\left(2x\right)}{\sin^2\left(2x\right)}\right)dx$

$\frac{x^8}{x^2}=\left(x^g\right)^2$

$g\left(t\right)=\sqrt{\frac{1}{t^2-2}}$