посчитайте решить уравнение.

a² - b² = (a - b)(a + b)

(a^2/7)^2 = a^4/7

(a^4/7)^2 = a^8/7

(x^8/7 - 4)/(x^4/7 + 2) - (x^4/7 - 4)/(x^2/7 - 2) = 2

x^2/7 ≠ 2

x ≠ 2^7/2

x > 0

(x^4/7 - 2)(x^4/7 + 2)/(x^4/7 + 2) - (x^2/7 - 2)(x^2/7 + 2)/(x^2/7 - 2) = 2

x^4/7 - 2 - (x^2/7 + 2) = 2

x^4/7 - x^2/7 - 6 = 0

x^2/7 = y

y^2 - y - 6 = 0

D = 1 + 24 = 25

y12 = (1 +- 5)/2 = 3 -2

y = -2 нет

y = 3

x^2/7 = 3

x = 3^7/2 = √3^7 = 27√3