$\lim_{x\to y}\left(\frac{ln\left(\frac{x}{y}\right)}{x-y}\right)$

$\int x^9\sqrt{10x^{10}+2}dx$

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

$\frac{x^4+x^2+2}{x-2}$

$8+5+3-13-2-1$

$\left(\frac{1}{5}x^3-\frac{1}{3}\right)^2$

$\int\left(\frac{1}{9-5x^2}\right)dx$