$$\int_0^{\frac{x}{4}}\sec\left(x\right)\tan dx$$

$$\left(1-d^2\right)\left(7-d^2\right)$$

$$9-5.5+3-7$$

$$\left(5w^{21}x^8y^2\right)^3$$

$$\frac{d}{dy}w^2e^{xyz}$$

$$\int-\sqrt{36x^2+4}dx$$

$$\frac{dy}{dx}=10x\sqrt{6y+3}$$