Ответ:
(x^2-y^2)(x^2+y^2)/(x-y)^2*(x-y)/x(x+y)
(x+y)(x^2+y^2)*1/x(x+y)=(x^2+y^2)/x
(a^5-5b^8)^2
125x^3-225x^2+135x-27
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Ответ:
(x^2-y^2)(x^2+y^2)/(x-y)^2*(x-y)/x(x+y)
(x+y)(x^2+y^2)*1/x(x+y)=(x^2+y^2)/x
(a^5-5b^8)^2
125x^3-225x^2+135x-27