$\frac{dy}{dx}\left(\frac{\left(x^2-8\right)^{\frac{1}{3}}\sqrt{x^4+1}}{x^6-7x+5}\right)$

$\left(x-9\right)^2\left(x^4-5y\right)$

$\int\frac{1+sen\sqrt{x}}{\sqrt{x}}dx$

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

$\left(2a+9b\right)\left(2a-9b\right)$

$\frac{dy}{dx}=\frac{\left(1-y^2\right)}{2x}$

$3\left(\sqrt{18}-\sqrt{2}\right)$