(х-9)^2=4√((x-9)^2) = ±√(4)x-9 = ±2x-9 = 2 or x-9 = -2x = 9 + 2 or x = 9 - 2x = 11 or x = 7
Ответ: x = 11 или x = 7.
(х-9)^2=4
√((x-9)^2) = ±√(4)
x-9 = ±2
x-9 = 2 or x-9 = -2
x = 9 + 2 or x = 9 - 2
x = 11 or x = 7
Ответ: x = 11 или x = 7.