$csc^2x+1=0$
$x^2+12x-64=0$
$\lim_{x\to4}\left(\frac{x^4-4x^3+4x^2}{x-2}\right)$
$h^2-27h-50$
$\frac{3e^{-2\cdot1}}{\frac{1}{4}e^1}$
$\int\left(\frac{16x^3}{\left(2x^4+4\right)^{\frac{3}{2}}}\right)dx$
$5\sqrt[3]{x-1}+\sqrt[3]{2y}$
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