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

$$\left(9-4m^5\right)^2$$

$$\lim_{x\to\infty}\left(\frac{e^{2x}}{1+e^x}\right)$$

$$\int\frac{5x+1}{\left(x+1\right)^2}dx$$

$$-14\:\left(2\right)$$

$$2\pi\int_0^5\left(12t^3\cdot\sqrt{1+t^2}\right)dt$$