$\int\frac{\left(x+7\right)}{\left(\sqrt{16-x^2}\right)}dx$

$\int_{.8\pi}^{.2\pi}\left(\sin\left(x\right)\right)dx$

$\lim_{x\to0}\left(\frac{x+sinx}{sin2x}\right)$

$cos^3x+5sin^2x-cosx$

$\frac{27x^2y^{-3}}{8x^{-4}y^3}$

$\lim_{x\to7}\left(\frac{2x^2-10x-28}{3x^2+16x-35}\right)$

$\int\frac{1}{\left(x+1\right)^2+16}dx$