$\left(2+2\cot^2\left(x\right)\right)\cos\left(x+270\right)$
$\left(8^2+1\right)\left(8^4-1\right)$
$h\left(t\right)=\frac{\left(t^2\right)^2}{\left(t^3+2\right)^2}$
$\lim_{x\to-\infty}\left(\frac{x-7}{x^2+6x-9}\right)$
$a-2=2c^{2t}-2$
$\frac{1}{x}-3<-6$
$\left(\frac{2}{5}u^3-\frac{1}{2}v\right)\left(\frac{2}{5}u^3-\frac{1}{2}v\right)\:$
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