$\frac{d^2y}{d^2x}=12x^2$
$\lim_{x\to0}\left(\frac{\arctan\left(7x\right)}{\ln\left(x\right)}\right)$
$32 + x = - 83$
$7+2+8-3-5-2$
$-x^2+5x+6$
$0.75a-0.4a+0.2a$
$5x^2\:+\:3x\:\ge\:\:3\:+2x^2$
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