$y'-y\:tan\:x\:=1$
$\lim_{x\to0}\left(\frac{lnx}{1-x}\right)$
$9a^4-6a^2\:x+3a^3\:x^2$
$4\left(x^2-3x+2\right)>0$
$\left(5abc-5bcd\right)^3$
$m^4+6m^2n^3+9n^6$
$\int\frac{3}{5e^x}dx$
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