$\frac{3\left(-5\right)-11}{3\left(-5\right)+5}<7$

$b^2+1a-6$

$\frac{1}{5}+\frac{4}{5}$

$\frac{2e^{2\sqrt{2x}}}{x}-\frac{4\sqrt{2}}{13x}+\frac{4e^{-2\sqrt{2x}}}{169x}$

$\left(-5+a\right)\left(-5-a\right)$

$\frac{1+\tan^3\left(x\right)}{1+\tan\left(x\right)}=1-\tan\left(x\right)+\tan^2\left(x\right)$

$\int\sqrt{e^2+x^2}dx$