1) 11√х = 1
√х = 1/11
x = 1/121
x = 0,0083
2) 3√х - 7 = 0
3√х = 7
√x = 7 / 3
x = 49 / 9
x = 5,44
3) 2 - 5√2х = 0
-5√2x = -2
√2x = 2 / 5
2x = 4 / 25
x = 2 / 25
x = 0,08
4) 4 + 5√х = 0
5√x = -4
√x = -(4 / 5)
Решения нет
5) √х - 2 = 4
√x = 2
x = 4
6) х^2 - 2 = 0,89
x^2 - 2 = 89 / 100
x^2 = (89 / 100) + 2
x^2 = 289 / 100
x1 = 17 / 10 x2 = -(17/10)
x1 = 1,7 x2 = -1,7
7) 1/4a^2 = 1
a^2 = 4
a1 = 2 a2 = -2
8) (х-3)^2 = 169
x - 3 = +-13
x1 = 16 x2 = -10