$a1=9x^2+36x+36$
$\lim_{x\to\frac{1}{2}}\left(\frac{x-\cos\left(\pi x\right)}{e^x-\sqrt{e}}\right)$
$-5\left\{-5\cdot\left[\left(3\cdot5\right)-15\right]\right\}$
$1+3\left(5a+4\right)$
$\:\:\frac{w^3}{w^2}$
$\frac{d}{dx}4x^2+2x-1$
$27+395$
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