$\left(x+1\right)^3\:-\:3x^2\:-\:1\cdot\frac{\left(x+1\right)}{\left(x+2\right)}$
$2x<2\left(x-1\right)$
$x^2-20x-19=0$
$\left(50\:x\:5\:y\:3\:\right)\left(\:-3xyz\right)$
$\left(27x^3-343\right)$
$7x^3-84x$
$\int8xsec^2\left(x^2-2\right)dx$
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