$\left(\tan\left(x\right)+y\right)-\left(\tan\left(x\right)\right)$
$\frac{\left(\frac{5}{3}-2\right)^{-1}}{5\cdot\frac{1}{4}-\frac{3}{2}-\frac{1}{6}}$
$-1x^2-4x$
$\lim_{x\to\infty}\left(\frac{1}{x^4+e^{-x}}\right)$
$7x^2+19x-6=0$
$3+2\cos^2\left(x\right)$
$5-24+1-\left(-9\right)$
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