$\left(\frac{dy}{dx}\right)+\left(\frac{xy}{x^2-9}\right)=0$

$5x^2-45x+20=0$

$\left(4x^2-5y^6\right)^2$

$\tan^2\left(x\right)\sec^2\left(x\right)-\tan^2\left(x\right)$

$x^3-x^2+2x^{-2}-5^2$

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

$\int4x^5\left(6x^6+3\right)^5dx$