$\left(2x+4y\right)^3\:\:$
$-2ab^2+5a^2b-4ab^2+7ab^2-4a^2b$
$3x+4;\:x=2\:y=4$
$\lim_{x\to0}\left(\frac{cotx}{x^{-2}}\right)$
$\frac{d^2y}{dx^2}\:y=\frac{a+bx}{a-bx}$
$8j^5i^7+j^5i^7$
$\left|-6\right|=6$
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