$\lim_{x\to\frac{\pi}{2}}\left(\frac{10x-5\pi}{cos\left(2\pi-x\right)}\right)$
$\left(8z+8\right)^2$
$\frac{dy}{dx}=3x^2+2$
$\int\frac{5x^3+2x^2-40x-21}{x^2-9}dx$
$\frac{4\left(h^{4}\right)^{4}}{12h}$
$350-0.364$
$a^2b^2a^2$
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