$\lim_{x\to7}\left(\frac{5-\sqrt{4+3x}}{7x}\right)$
$3y'+2y=sinx$
$4\int\left(\sin\left(x\right)^3\right)dx$
$\lim_{n\to\infty}\left(\frac{n}{n^2+1}\right)$
$-9-\left(-22\right)\:$
$\left(15x-2\right)^2$
$23+15+6+6$
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