$\int\frac{2}{x^2\sqrt{9-x^2}}dx$
$25x^2-40x-16$
$1.8\sin\left(\frac{x}{3}\right)=1.8$
$\int\pi\cos\left(\pi x\right)dx$
$\left(-0.9999\right)^2-5\left(-0.9999\right)$
$\:\int\cos^2\:t\:\sin^5\:t\:dt$
$64-\left(-11+2\right)+\left|-5-\left(-5\right)\right|$
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