$\left(2x+\:11y\right)\left(8x-12y\right)$
$-4x\left(-x+10\right)=\left(4x+60\right):2$
$45a^2-7ab+36ab-20^2+8$
$-15+132$
$cos\:\left(tan^{-1}\left(\frac{3}{4}\right)+cos^{-1}\left(\frac{7}{25}\right)\right)$
$-\int8dx$
$\frac { ( 3 ) - 2 } { 3 \cdot ( 3 - 3 ) }$
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