$\left(67\right)\left(-21\right)$

$\int\left(\frac{1}{\left(169+x^2\right)^{\frac{3}{2}}}\right)dx$

$5.38\cos\left(291.80\right)+5\sin\left(291.80\right)$

$\left(3e^{-\infty}\right)^{\frac{1}{3\left(\infty\right)}}$

$8\left(j+4\right)$

$\frac{\frac{d}{dx}x}{x-1}$

$h^2+3h^2+4h^2+3h+1$