Решите уравнение: 2-x=√x+10
x ≤ 2
(2 - x)² = (√x + 10)²
4 - 4x + x² = x + 10
x² - 5x - 6 = 0
Δ = 25 + 24 = 49
x1 = (5 + 7)/2 = 12/2 = 6
x2 = (5 - 7)/2 = - 2/2 = -1
x = { - 1 }