Question

50 БАЛЛОВ СРОЧНО!!!!!!!!!!!!!!!!!!!

Answer 1

Ответ:

Объяснение:

$frac{x^{2} -y^{2} }{5x^{2} } :frac{x^{2}-2xy+y^{2} }{25x} =frac{x^{2}-y^{2} }{5x^{2} }*frac{25x}{(x-y)^{2} } =frac{(x-y)(x+y)*25x}{5x^{2}*(x-y)^{2} } =frac{5*(x+y)}{x*(x-y)}=\=frac{5*(2+1)}{2*(2-1)}=frac{5*3}{2*1}=frac{15}{2} =7,5.$