$\:3x\left(\:4x\:+\:2\:\right)\:-\:12x\:+\:4$
$sin\left(a\right)sin\left(b\right)cos\left(c\right)cos\left(d\right)+sin\left(a\right)sin\left(b\right)sin\left(c\right)sin\left(d\right)+cos\left(a\right)cos\left(b\right)$
$\frac{d}{dx}\left(1-x\right)\tan\left(x\right)$
$\left(h+6\right)\left(h-3\right)$
$\int\:\sqrt{\left(x+6\right)}dx$
$\left(2x^2-x-1\right)\cdot\left(x^2-9\right)$
$x\:^2\:+2x=8$
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