bentuk sederhana dari (x-1)(1-x/2-x)^2(x-2/1-x)^3

[tex](x-1)( \frac{1 - x}{2 - x})^2( \frac{x - 2}{1 - x} )^3 \\ = - (1 - x) \frac{ {(1 - x)}^{2} }{ {(2 - x)}^{2} } \frac{ {(x - 2)}^{3} }{ {(1 - x)}^{3} } \\ = - \frac{( - (2 - x))^{3}}{ {(2 - x)}^{2} } \\ = - ( - (2 - x)) \\ = 2 - x [/tex]