$$\frac{1-cos2a}{cos^2a}$$

$$\frac{d}{dx}\left(\sqrt[3]{4x^3+6x^2-5}\right)$$

$$y'-y^2=1$$

$$\int\left(x\cdot\left(2x+7\right)^3\right)dx$$

$$x+7=22$$

$$2x^2-13x-20=0$$

$$\int4x^6\left(3x^7-8\right)^{\frac{1}{3}}dx$$