$\:x^4\:-13x^2\:-\:36\:$
$\int q.\sqrt{q+1}dq$
$2x+8\ge0$
$4x^2-12x-8x$
$2\log\left(x+2\right)=\log\left(16\right)+\log\left(4\right)$
$-2\left(a\:-\:2b\right)\:$
$3m+15m-8mn$
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