$\left(8+7\right)-3\left(1-2\right)$
$\int\left(x\cdot\:\:\ln\:\:\left(x+2\right)\right)dx$
$5x^2-25x+8$
$\left(\frac{1}{2}m^2+5n^3\right)\cdot\left(\frac{1}{2}m^2-5n^3\right)$
$x+2y+3z=9$
$\left(+44\:\right)\::\:\left(+11\:\right)\:\:$
$-169-105$
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