$$\lim_{x\to0}\left(1-2x\right)^{\frac{1}{3x}-3}$$

$$12-7^3$$

$$x^2+\:6x\:+\:8$$

$$\int\left(x^7+x^5+x^3\right)\left(e^{3x}+e^{2x}+e^x\right)dx$$

$$\lim_{x\to\infty}\left(x^3-2x^2\ln\left(x\right)\right)$$

$$x^2>2x-1$$