Question

Y^2-x^2/x^2-2xy+y^2 сократите дробь

Answer 1

$frac{y^2-x^2}{x^2-2xy+y^2}= frac{(y-x)(y+x)}{(x-y)^2}= frac{(y-x)(y+x)}{(y-x)^2}= frac{y+x}{y-x}$