Question

x^2-2x дробная черта x^2-3x+2

Answer 1

$frac{x^2-2x}{x^2-3x+2}= frac{x(x-2)}{(x-1)(x-2)}= frac{x}{x-1}$

Answer 2

$frac{x^2-2x}{x^2-3x+2}= frac{x(x-2)}{x^2-2x-x+2}= frac{x(x-2)}{x(x-2)-1(x-2)}=\ = frac{x(x-2)}{(x-2)(x-1)} = frac{x}{x-1}$