Question

Помогите срочно (a-b)^2/b^2-a^2

Answer 1

(a-b)^2/b^2-a^2 = (a-b)^2/(а-b)(a+b)= (a-b)/(a+b)

Answer 2

$frac{(a-b)^{2} }{b^{2}-a^{2}  }$=$frac{(a-b)^{2} }{(b-a)*(b+a)}$=$frac{(a-b)^{2} }{-(a-b)*(b+a)}$=$frac{-(a-b)}{b+a}$=$-frac{a-b}{b+a}$=$frac{b-a}{b+a}$