$-c^4-d^4$
$87-13+42-4+98$
$\int\frac{2y}{x^2}dx$
$2x^2\:+\:7x\:+\:2$
$7x-13>72$
$\lim_{x\to-3}\left(4x^2+12x\right)$
$12\:x\:\left(-5\right)$
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