$\frac{3x+3}{x^2-8x-9}$

$\int\frac{p}{p^3+4p^2+5p+2}\:dx$

$\left(\frac{\sqrt{x}\left(x^4\right)}{x^{\frac{3}{2}}}\right)$

$\left(b^m-b^{\left(m+1\right)}+b^{\left(m+2\right)}\right)\left(b+1\right)$

$\sin\left(x\right)-1=-\cos\left(x\right)$

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

$\left(\left(-5x+9\right)^2\right)$