$\int\frac{1}{\sqrt{9s-2}}ds$
$=\frac{6}{t}-\frac{81}{5}$
$cos\theta\:-cos\theta\:sin^2\theta\:$
$y^{''}-10y^'+25y=0$
$x^2+2x=-1$
$4-p^2$
$3x+7=-7+9y$
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