(x-5)(x-5) ≤ x(x+4) + 1(x-5)^2 ≤ x^2 + 4x + 1x^2 - 10x + 25 ≤ x^2 + 4x + 1-10x + 25 ≤ 4x + 1-14x + 25 ≤ 1-14x ≤ -24x ≥ 24/14x ≥ 12/7
Ответ: x ≥ 12/7
(x-5)(x-5) ≤ x(x+4) + 1
(x-5)^2 ≤ x^2 + 4x + 1
x^2 - 10x + 25 ≤ x^2 + 4x + 1
-10x + 25 ≤ 4x + 1
-14x + 25 ≤ 1
-14x ≤ -24
x ≥ 24/14
x ≥ 12/7
Ответ: x ≥ 12/7