$\int\frac{x-2}{\left(x+1\right)\left(x-1\right)}dx$
$m^4+m^5+m^2+m^3$
$\int\frac{11}{-9x}dx$
$\lim_{x\to0}\left(\frac{e^x-e^{-x}-2}{x-sin\left(x\right)}\right)$
$15x^2-240x$
$8x^2=1800$
$\left(9\csc\left(x\right)+9\right)\left(9\csc\left(x\right)-9\right)$
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