$$\left(6+x^{12}\right)\frac{dy}{dx}=\frac{x^{11}}{y}$$

$$\frac{3.9-4}{\sqrt{3.9}-2}$$

$$\left(3.775\right)^{\frac{3}{2}}$$

$$x+7^2$$

$$\frac{\left(-x^6+5x^4+3x^3-2x+8\right)}{\left(4+x\right)}$$

$$\int\frac{3}{4x-6}dx$$

$$4x^3-24x^2+36x$$