$\int\frac{2ax}{\left(ax^2+b\right)\ln\left(ax^2+b\right)}dx$

$\frac{4x^3-3x^2+x+7}{x-2}$

$\frac{9x-4}{5}=\frac{7x+3}{10}$

$2\cos\left(x\right)^2+\sin\left(2x\right)$

$x^2+1\frac{1}{x^2}$

$\lim_{x\to2}\left(\sqrt{5x+6}\right)$

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