$-10\left(9+-7x\right)+-6$

$\lim_{x\to\infty}-x^6-x^5+x^3-6x$

$\lim_{n\to\infty}\left(\frac{66n^2+63n+9}{2n^2}\right)$

$\frac{x}{1-x}\ge2$

$\left(2z^3-5z^2+8z-1\right)\left(4z-3\right)$

$\frac{1}{\tan\left(x\right)}+\frac{1}{\cot\left(x\right)}=\csc\left(x\right)\sec\left(x\right)$

$\int p\left(p+3\right)^7dx$