$$\sqrt{320x^5}$$

$$\left(-20\right)\cdot7$$

$$\lim_{x\to\infty}\left(\frac{4x^3+5}{x^3-11x}\right)$$

$$\int_0^b\left(x+1\right)^{\left(-\frac{1}{2}\right)}dx$$

$$cos^2x\frac{dy}{dx}=e^{-2y}$$

$$2x^2-5x+1=3$$

$$\left(4xmn+2xm^2\right)^3$$