$$\frac{y^{\ 4}}{2x^2}$$

$$\frac{9y^8}{2x^4}$$

$$\frac{2x^2}{y^{\ 4}}$$

Can't be simplified

$$\frac{4\left(x-4\right)}{\left(x+5\right)}$$

$$\frac{\left(x+4\right)^2\left(x-4\right)}{16\left(x+5\right)}$$

Can't be simplified

$$\frac{\left(x+5\right)}{4\left(x-4\right)\ }$$

$$\frac{8}{n+2}$$  

$$\frac{n-4}{8}$$  

$$\left(n+10\right)\left(n-7\right)$$  

$$\frac{6n}{n+1}$$  

$$\frac{2a\left(a+7\right)}{a+3}$$  

$$\frac{5a}{a-6}$$  

$$a-7$$  

$$\frac{a+7}{a+3}$$  

$$\frac{\left(x+6\right)\left(x-5\right)}{9x}$$  

$$3$$  

$$\frac{3}{2}$$  

$$\frac{3}{x+8}$$  

$$\frac{1}{6},\ x\ne-10,\ -8,\ 8$$

$$\frac{x+10}{6x+60},\ x\ne-8,\ 8$$

$$\frac{x+8}{6x+60},\ x\ne-8,\ 8$$

$$\frac{x+8}{x-8},\ x\ne-10,\ -8$$

$$\frac{4\left(x-4\right)}{\left(x+5\right)}$$

$$\frac{\left(x+4\right)^2\left(x-4\right)}{16\left(x+5\right)}$$

Can't be simplified

$$\frac{\left(x+5\right)}{4\left(x-4\right)\ }$$