$54^2-46^2$
$\int\left(81+x^2\right)^{-4}dx$
$\left(m^{10}-2n\right)^2$
$6-9-5+4-7+1$
$\lim_{x\to\infty}\left(\frac{2x+7}{3x^2+5}\right)$
$y'=\left(15x^2+4\right)\left(6y+5\right)$
$\int e^{3x+8}dx$
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