$4\left(-7+9q\right)$
$x-7<-9x+13$
$\frac{\csc^2\left(x\right)-1}{\cos\left(x\right)}$
$\lim\:_{x\to\:\:2}\left(\frac{x-5}{\left(x-2\right)^2}\right)$
$x^4-6x^3+11x^2-6x$
$\int9\ln\left(\left|7x\right|\right)dx$
$\frac{dy}{dx}\left(\frac{x}{y}-xy+3=0\right)$
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