$\int\frac{x+1}{\sqrt[3]{x^{2}+2x+7}}dx$
$2x^3-x^4+3x+6x^5-7x^3$
$\frac{dy}{dx}\left(x^2y^2-cosy\right)$
$\frac{3x^2+5x-4}{x+3}$
$y-\sqrt{x^2}-5$
$\left(x^2+1\right)\left(x^2-2x-1\right)$
$9\left(-8+6\right)+9-4\left(7-3\right)$
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