$$\frac{x^2-5x+33}{x+5}$$

$$\left(3x\right)^3+4^3$$

$$\frac{d}{dx}x^3y^2-x^4y+2x^3y$$

$$4x^2y''\:-4y'+4y$$

$$\frac{x^2y^2}{\left(1+x\right)}-\frac{dx}{dy}=0$$

$$-6n^2-3f+5n^2+16f$$

$$82a+2$$