$y=\frac{1}{2}x^2-x-4\:;\:x=-2$
$\left(\left[\left(7\cdot3\right)-2+4\right]\right)$
$\int\frac{z+2}{\sqrt{3-2z-z^2}}dz$
$\left(3a+7\right)\left(2a-5\right)$
$\sqrt{x+2-3}$
$\left(2x^2y+3xy^2\right)^2$
$\left(h+5\right)\left(h-7\right)$
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