$15.450+16.890$
$\frac{9x^40x^3+2x^2+6x-8}{3x^2+x-2}$
$2x^2+36x+116=0$
$\int\frac{2\cos\left(\ln\left(x\right)\right)}{x}dx$
$\int_{-1}^2\left(\frac{3+x}{x-4}\right)dx$
$\int_{15}^{\infty}\left(\frac{1}{\sqrt{x}}\right)dx$
$-x^2-7x-30$
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