$\lim_{x\to-1}3x^2-4x+3$
$\left(-7b+8\right)\left(7b+8\right)$
$\frac{\cot\left(\theta\:\right)-tan\:\left(\theta\:\right)}{cot\left(\theta\:\right)+tan\left(\theta\:\right)}=cos\:\left(2\theta\:\right)$
$a^3-b^6$
$\lim_{x\to1}\left(ln\left(x\right)\cdot ln\left(x-1\right)\right)$
$100a^2b^3c-150ab^2c^2+50ab^3c^3-200ab$
$\left(\frac{y^4}{4}\right)\left(\frac{x^3}{3}\right)$
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