$\left(x^2+\sqrt{y^2}\right)\left(x^2-\sqrt{y^2}\right)$

$\left(1-z^{30}\right)^4$

$\int\frac{2}{x^3-x}dx$

$340x+270y=2475$

$5-3\left[9-\left(5+6\right)-3\left(8-2\right)+9\left(5-8\right)\right]$

$\frac{\frac{7x^{2}}{9}}{\frac{6x^{4}}{5}}$

$y=\left(x^3+x\right)^4\left(e^x+21x\right)^5$