$\left(\sqrt{7}\cdot\sqrt{2}+\sqrt{3}\right)\cdot\left(\sqrt{7}\cdot\sqrt{2}-\sqrt{3}\right)$
$\left(x+2\right)\left(x+1\right)\left(x+3\right)\left(x+4\right)+1$
$x^216x+64$
$x^3+3x^2+3x+1-x+3$
$\int\mathrm{sech}^2\left(8x\right)dx$
$2\cdot0.2u^3\cdot5v^5$
$x^3-512$
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