$140\:-\:\left(-370\right)$
$\left(-5g-2h\right)\left(-5g+2h\right)$
$-x^2-x+42$
$4a+a$
$\lim_{x\to0}\left(\frac{5cosx+5}{\left(x+\pi\right)^2}\right)$
$x=-5,\:y=3$
$y^{3}\cdoty^{2}=y$
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