a½ - 2a¼ = a¼(a¼ - 2)
Сократительная дробь:(x + y) / (x⅓ + y⅓) = (x + y) / (x^(1/3) + y^(1/3)) = (x + y) / (x^(1/3) + y^(1/3)) * ((x^(2/3) - x^(1/3)y^(1/3) + y^(2/3)) / (x^(2/3) - x^(1/3)y^(1/3) + y^(2/3)))= (x^3 + y^3) / (x^2 - xy + y^2)
a½ - 2a¼ = a¼(a¼ - 2)
Сократительная дробь:
(x + y) / (x⅓ + y⅓) = (x + y) / (x^(1/3) + y^(1/3)) = (x + y) / (x^(1/3) + y^(1/3)) * ((x^(2/3) - x^(1/3)y^(1/3) + y^(2/3)) / (x^(2/3) - x^(1/3)y^(1/3) + y^(2/3)))
= (x^3 + y^3) / (x^2 - xy + y^2)