$\int_1^{\infty\:}\frac{x^5}{\left(1+x^3\right)^{\frac{7}{4}}}\:dx$

$\lim_{x\to\infty}\left(\left(\frac{2x-3}{2x+5}\right)^{2x+1}\right)$

$\lim_{x\to0}\left(\frac{hx}{e^{\frac{hx}{k}}-1}\right)$

$\left(m+25\right)\left(m+18\right)$

$4a\left(2a^2\right)\left(3a^3\right)-a^5$

$\int\frac{5x-3}{2x+4}dx$

$\sqrt{2\left(\frac{1}{2x}\right)-1}$