$$\theta\:+\:2\:=0$$

$$\frac{sin\left(x\right)}{cos\left(x\right)\left(cosec\left(x\right)\right)}$$

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

$$76\:+\:976\:+124\:+\:9=\:$$

$$\frac{90}{x^2+110x+1000}$$

$$\sqrt[4]{2^2x^2y^3}\left(\sqrt[3]{3x^2}\right)$$

$$\frac{dy}{dx}=\frac{x^2+1}{y^2}$$