$\left(\frac{2}{5}a^{\frac{2}{5}}\right)\left(\frac{5}{7}a^{\frac{1}{5}}\right)$

$\left(x^3n+2\right)\:\left(\:x^3n-2\right)$

$\int\frac{\left(x+1\right)}{x\left(x^2+9\right)}dx$

$\frac{3^{\frac{1}{2}}:3}{\left(3^2\right)^{\frac{-1}{2}}}$

$\int\left(\frac{u+4}{4u+1}\right)du$

$\lim_{x\to1}\left(\frac{\left(1-k\right)^x\left(\left(j\right)^{1-x}-1\right)}{1-x}\right)$

$\int\frac{1}{x^2\left(1-x^2\right)^{\frac{3}{2}}}dx$