$9x^2-11x+4$

$\int\frac{1}{x\left(9+4\left(\ln\left(x\right)\right)^2\right)}dx$

$\int\:\frac{x^2-1}{x\frac{3}{2}}dx$

$\int\left(\frac{x^{\frac{1}{4}}}{1+x^{\frac{1}{2}}}\right)dx$

$\frac{3x^3-5x^2+4}{x+1}$

$2y'+3y=e^{-x}$

$\left(8u^2-6v^2\right)+\left(4v^2-2u^2+6\right)$