$$\frac{120}{-60}$$

$$x^3+8x^3-10x^3$$

$$2x+2=14$$

$$\frac{dy}{dx}=\frac{3\left(x+1\right)}{y}$$

$$\frac{\sin^2t\left(\sec t+\cos\sec t\right)}{\cos t\tan t}=1+\tan t$$

$$y^2-2yx+x^2$$

$$9x^2+12xy+4x$$