$$\left(-\frac{1}{5}\right)^{\frac{7}{3}}\left(\frac{1}{5}\right)^7$$

$$\left(-13n^4+12n^3-3+8n^2\right)+\left(-11n^2-n^3\right)$$

$$\cot\left(c\right)+\tan\left(c\right)=2\csc\left(2c\right)$$

$$x^4-2^3-x^2+1$$

$$\sqrt[4]{w}=2$$

$$\lim_{n\to\infty}\left(1-\frac{2n}{n+2}\right)$$

$$\int_4^{\infty}\left(\frac{1}{\left(x-3\right)^{\frac{3}{2}}}\right)dx$$