$-\frac{4}{7}\:p+\left(-\frac{2}{7}\right)+\frac{1}{7}$

$\frac{1}{\sin x\cdot\frac{\cos^2x}{\sin x}}$

$\left(\sin\left(x\right)+1\right)^2+\cos^2\left(x\right)=2$

$3\left(2g+3\right)+4g$

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

$-\frac{1}{8}e^{3x}-\frac{1}{8}e^x$

$sin2\theta\:\left(csc^2\theta\:\right)$