$\left(3+2i\right)\left(5-11i\right)$
$4\sin\left(x\right)=-\cos^2\left(x\right)-1$
$\frac{x-3}{3x-9}+1>0$
$\left(-3\right)\cdot\left|6-\left(\frac{12}{4}-7\right)\right|$
$\cos\left(-0.625\right)$
$\int_{-2}^1\left(\left(x^2-1\right)-\left(2-x\right)\right)dx$
$\:\int\:5\:\cos\left(5x\right)\:dx$
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