$$3\:\left(4x\:+\:\frac{2}{3}\right)\:-\:7x\:+\:\frac{3}{8}$$

$$tx+\left(1-t\right)x=e^{2t}$$

$$-\frac{32}{3}x^3+16x^2-\frac{22}{3}x-1$$

$$\int\left(\frac{1}{x\sqrt{9+x}}\right)dx$$

$$y=e^{-x}\cos\left(\frac{1}{2}x\right)$$

$$x^0y^{-3}$$

$$\lim_{x\to-1}\left(\frac{\left(8x^4+5x^3+2x-1\right)}{x+1}\right)$$