$\lim_{x\to0}\left(\sin\left(x\right)^2\right)$
$k^2+3k+2$
$7\csc^2\left(x\right)-6=8$
$\int_0^{\infty}\left(\frac{1}{\sqrt{x^2+100}}\right)dx$
$3x^2-24x+50$
$5x+4<10$
$\int\frac{x-1}{x^4-16}dx$
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