x!(x4)!\frac{x !}{\left(\frac{x}{4}\right) !}(4x)!x!
x!4!(x4)!\frac{x !}{4 !\left(\frac{x}{4}\right) !}4!(4x)!x!
x!4!{(x4)!}4\frac{x !}{4 !\left\{\left(\frac{x}{4}\right) !\right\}^{4}}4!{(4x)!}4x!
x!4{(x4)!}4\frac{x !}{4\left\{\left(\frac{x}{4}\right) !\right\}^{4}}4{(4x)!}4x!