$\tan^{-1}\left(\frac{\frac{-3}{2}}{\frac{-1}{2}}\right)$
$\left(2z-5\right)\left(2z+8\right)$
$\left(3z+5\right)\left(7z+4\right)$
$m^2+3m-\frac{27}{m-1}$
$\int\frac{5}{5x+7}dx$
$\left(2x^3y^2-x^2y\right)^2$
$9m+2r\:-4m+6p$
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