$b\cos\left(lt+o\right)+\left(-2cos\left(l\right)x\left(t-1\right)+x\left(t-2\right)\right)$
$0,46+0,96$
$\frac{9}{6}w^3-3w^3+4$
$2 + 5 - ( 1 - 5 ) - 2 + ( 2 + 3 )$
$2a^2+4ab$
$\sqrt{x+1}=2$
$dx+e^{-5x}dy=0$
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