Question

Сократите дробь (x^2-y^2)^2
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X^2+2xy+y^2

Answer 1

 x^2+xy =  x(x+y)     =  x x^2-y^2  (x-y)(x+y)     x-y

Answer 2

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