Horatio|4х-8|+|2-х|=4
4|х-2|+|2-х|=4
Модули раскрытия
|x - 2| |2 - x|
x < 2 2 - x 2 - x
x>=2 x - 2 x - 2
1. x < 2
4(2 - x) + (2 - x) = 4
10 - 5x = 4
5x = 6
x₁ = 6/5
2. x >=2
4(x - 2) + (x - 2) = 4
5x - 10 = 4
5x = 14
x₂ = 14/5
x₁ + x₂ = 6/5 + 14/5 = 20/5 = 4
x= {6/5, 14/5} сумма 4
Sherri Parker