$\sec\infty$
$\frac{sin^2x+sinxcos^2x}{cosx}$
$144a^2-96a+16$
$145+a^2-23a+a-24$
$\int_0^{\infty}5\sin\left(x\right)dx$
$\left(3x^6-2x^4\right)$
$\left(rs\right)^{-\frac{1}{4}}$
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