$$\int x^5\cdot\cos\left(x^2\right)dx$$

$$\:\frac{3x+2}{5}\:<x-4$$

$$6x^4-17x^3+24x^2-34x+24\:\left(3x-4\right)$$

$$cot\:\left(x+45\right)=\frac{\left(cosx-senx\right)}{cosx+senx}$$

$$\frac{\left(y-3x\right)\left(y+3x\right)}{9y^2}$$

$$\left(xy-ab\right)^4$$

$$\frac{dy}{dt}=x^2-2x+2$$