$alpha_{x\to0}\left(\frac{7x^2}{cosx-1}\right)$
$\left(-\frac{3}{2}n^2+\frac{2}{3}\right)^2$
$10\int\left(sec\:\cdot\:tan\:\right)$
$\lim_{t\to\infty}\left(\frac{\sqrt{t}+t^2}{2t-t^2}\right)$
$-4x+3\left(x-1\right)+2=5$
$125\:a^3\:\:+\:8b^3$
$x^2=28$
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