$6\left(-8\right)+4$

$100=d+70m^2+4d-3m^2-y^2+25m^2$

$\lim_{x\to\infty}\left(x\:sen\left(\frac{1}{2}\right)\right)$

$\int\frac{1}{sqrt\left(4+x^2\right)}dx$

$\ln\:\frac{1+xy}{1-xy}-2x$

$\frac{d}{dx}\left(11x^8\:+\:9x^4\:-\:16x\:+\:13\right)$