$16,84-8,5$
$\frac{7x}{x+2}+\frac{2x}{x+2}$
$\int\frac{2}{1+\cos\left(x\right)}dx$
$\frac{x^2-12x+40}{x-5}$
$\left(2x^3-3x^2+10x-6\right)\left(-2x\right)$
$\int_{\frac{1}{2}}^a\left(xln\left(4x\right)\right)dx$
$\left(-\:3\right)^4$
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