$24x^2+\frac{9}{5x^2}-6x^2$
$x^4-7+\frac{16}{x^4}$
$2x^2-x-3=0$
$\int31^{-x}dx$
$x^2-12=132$
$4\csc^2\left(x\right)-25=0$
$\frac{d}{dx}\frac{x+10}{x+4}$
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