4^((x - y)^2 + x) = 4^(x + 1)
5^(x + y - 1) = 25
(x - y)^2 + x = x + 1
x + y - 1 = 2
(x - y)^2 = 1
x = 3 - y
(3 - 2y)^2 = 1
9 - 12y + 4y^2 = 1
4y^2 - 12y + 8 = 0
y^2 - 3y + 2 = 0
y1 + y2 = 3
y1*y2 = 2
y1 = 1; y2 = 2
x1 = 2; x2 = 1
Ответ: (1, 2) и (2, 1)