$\left(x^4-2x^5\right)^2$

$\left(y\cdot2\right)\left(y\cdot2\right)$

$-x+\:5\:<=-6x\:-\:7$

$\int\:-\sqrt[5]{10x+4}dx$

$\lim\:_{x\to\:10}\left(x^2-20x+100\right)^{x-10}$

$\lim\:_{x\to\:1}\left(2^x+x\right)^{\frac{1}{x}}+\lim\:_{x\to\:0}\left(\frac{cos\left(x-1\right)}{x}\right)$

$\int_0^{66}\left(\frac{x^2}{33}\sqrt{66x-x^2}+\frac{\sqrt{66x-x^2}}{99}\right)dx$