$$\int\left(\frac{3x^3}{\sqrt{1-12x^4}}\right)dx$$

$$\left(6^{-6}\right)^{-2}$$

$$\cos\left(y\right)\sec\left(y\right)-\cos\left(y\right)=\sin^2\left(y\right)$$

$$x^2+20x+1$$

$$.25b-.4b+.2b$$

$$\frac{x^{5}\left(x-5\right)^{6}}{\left(x^{2}+5\right)^{8}}$$

$$\frac{d^2}{dx^2}\left(log\left(x-y\right)\right)$$