$2xy+7x^2y^3;\:x=-2;\:y=-1$
$\int\frac{x^{4}}{x+2}dx$
$97,62+57,37+18,61$
$80+212$
$\frac{x^{2}}{4-x^{2}}$
$-90+612$
$v^{-3}$
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