Question

$\frac{x-1}{x+2}: \frac{x-2}{x-1} =$

Answer 1

$\frac{x-1}{x+2} : \frac{x-2}{x-1} = \frac{x-1}{x+2} * \frac{x-1}{x-2} = \frac{(x-1)^{2} }{(x+2)(x-2)}= \frac{ x^{2} -2x+1}{ x^{2}-4 } .$