$\int\frac{\left(.3x+1\right)}{\left(3x-1\right)^2}dx$

$-8-15-19,4-29,100-1$

$\frac{1}{2}m^2n+\frac{1}{3}m^2n+\frac{1}{4}m^2n+\frac{1}{6}m^2n$

$\lim_{x\to-1}\left(\frac{2x^2-2}{x+1}\right)$

$\frac{8x^6}{2x^2}+\frac{27}{3}$

$\lim_{x\to2}\left(\frac{x^2+x-6}{x^2+8x+15}\right)$