$$\lim_{x\to0}\left(\frac{e^x}{2^x}\right)$$

$$f\left(x\right)=\left(x^2+1\right)^7$$

$$\lim_{x\to3}\left(\frac{6-2x}{\sqrt{x+1}-2}\right)$$

$$3\sin\left(x\right)-1=\sin\left(x\right)$$

$$yx-2x^2$$

$$\int x\left(\sqrt{2x-3}\right)dx$$

$$\left(-1.2\right)^2$$