$\lim_{x\to\infty}\left(\frac{cosx3}{x}\right)$

$\int\frac{x^4+x^3+16}{x\left(x^2+4\right)}dx$

$\left(\frac{2}{5}u^3-\frac{1}{2}v\right)\left(\frac{2}{5}u^3-\frac{1}{2}v\right)\:$

$4x+10<-2x-8$

$\frac{y+1}{y^2+1}dx=\frac{x^2+1}{x}dy$

$x^2+10\cdot x+25\cdot x^2+10\cdot x+25$

$\left(m-7-m-7\right)$