$$\frac{d}{dx}\sqrt[4]{257}$$

$$\left(1-\frac{1}{5}\right)\left(1-\frac{1}{6}\right)\left(1-\frac{1}{7}\right)\left(1-\frac{1}{8}\right)$$

$$k+12y+5k-10y$$

$$\:y^6+2y^3+1$$

$$36x^2+8x\:+4$$

$$6x\left(8x+1\right)-3\left(4x+1\right)=6x+3$$

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