$\int\frac{u\left(1-\left(1+\sqrt{u}\right)\right)}{1+\sqrt{u}}du$
$\int\sqrt{4x^2-24x+43}dx$
$\frac{d}{dx}x^5-2x^3y^2-y^5=5-3xy^4$
$\int\frac{3^x}{1+3^x}\:dx$
$\lim_{x\to3}\left(10\right)$
$m^2+12^2+49$
$\frac{7^9-7.7^7}{7.7^5.7}$
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