$$\lim_{x\to4}\left(\frac{e^4-e^x}{x-4}\right)$$

$$\lim_{h\to0}\left(\frac{\left(x+h\right)^{10}-x^{10}}{h}\right)$$

$$\left(x+1\right)\left(x-1\right)+\left(3+x\left(3-x\right)\right)$$

$$0=\cos\left(x\right)$$

$$2x+\:x\:+1$$

$$\int3v\left(v^2\:+\:8\right)^2dv$$

$$0,089\cdot10^{3}-\frac{15}{5}+\frac{14}{7\cdot2}+\sqrt{4}$$