$\frac{\left(t+5\right)^2}{t^3}$
$v^2+8v-9=0$
$144h^2-491^2$
$8a^2-2a-15$
$\frac{\csc^{2}\left(t\right)}{\csc^{2}\left(t\right)-1}$
$-2\ln\left(y\right)=x$
$\left(6-4y\right)^3$
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