$f^2+9f+11$
$\lim_{x\to\infty}\left(\frac{lnlnx}{x^2}\right)$
$\int2\cdot\sec^2\left(2x-5\right)dx$
$\frac{m^5-2^5}{m-2}$
$\left(xy+x+y+1\right)dx=\left(xy-x-y+1\right)dy$
$x^8+18x^4$
$\left(x+3-\sqrt{2}\right)\left(x+3+\sqrt{2}\right)$
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