$2ax-4by+7cz-11ax+7by-8cz$
$\int\frac{2x-3}{x^3+4x}dx$
$\sen^{2}30^{\circ}+\sec^{2}45^{\circ}$
$\left(b^5\right)^{-1}$
$\log_{10}\left(x\right)+3\log_{10}\left(2\right)=3$
$\frac{\left(4\sin\left(x\right)\right)}{1-\cos\left(x\right)}=0$
$\frac{dy}{dt}=tan4x$
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