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

$$\left(8+2m\right)^2$$

$$8-2u-u^2$$

$$\frac{\left(a+b\right)^2-\left(a+b\right)^2}{4ab}$$

$$( x + 3 ) ( x + 10 )$$

$$\left(\frac{1}{3}s^5\right)^5\left(\frac{3}{5}s^3\right)^2$$

$$939-123$$