$\lim_{x\to\infty}\left(x^2cscx\right)$
$h^2+14h+49$
$\int_x^0\left(\frac{1}{1+4f}\right)df$
$2tan\left(x\right)-\left(1+tan\left(x\right)\right)^2$
$\int_1^3\left(5+2x-3x^2\right)dx$
$4+5x+10^2$
$\int\:\frac{x^2+6x+4}{x^4+8x^2+16}dx$
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