$$-5x^2+27x-36$$

$$\int x^7\left(1+x^4\right)^{-\frac{1}{2}}dx$$

$$find\:\left(d\:+\:2\right)\:\left(d\:-\:2\right)$$

$$\frac{z}{z^4+4}$$

$$\left(x^2+y^{2n}\right)^3$$

$$\left(y^2-3\right)^5$$

$$\frac{d}{dx}\left(y+xy^3=0\right)$$