$3\cos x+4\sec^{2}x\right)$
$\lim\:_{x\to\:\:1}\left(\frac{-cos\left(x\right)+cos1}{x^2-1}\right)$
$\frac{dy}{dx}-2y=-3e^{-5x}$
$x^2-148x+5477$
$57x-41x-39-31x+24x+36-21x+14x+28$
$\left(-416\right)+\left(-235\right)+\left(-315\right)$
$\left(9a^2+8b^3\right)^3$
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