$$x^2+10x+20=0$$

$$\log_x\left(\frac{9}{\sqrt{3}}\right)=\frac{3}{2}$$

$$\:10x-9x-11=24\:$$

$$y'=\frac{y}{x}+5x$$

$$\lim_{t\to\infty}\left(\frac{36\cdot\sin^2\left(t\right)}{t^2+100}\right)$$

$$\left(\left(-2\right)+\left(\left(-4\right)x\right)\right)^2$$

$$c-0.51+0.3$$