1) √х - 5 = √х = x = 81
2) √2х + 3 = √2х = 2x = x = 0
3) √-32 - 9x = -32 - 9x = -9x = 3x = -4
4) √10 - x = √10 = x + 10 = x^2 + 4x + x^2 + 4x - 6 = 0
Дискриминант D = 4^2 - 41(-6) = 16 + 24 = 4x = (-4 ± √40) / x = (-4 ± 2√10) / x = -2 ± √1x = -2 + √10, -2 - √10
1) √х - 5 =
√х =
x = 81
2) √2х + 3 =
√2х =
2x =
x = 0
3) √-32 - 9x =
-32 - 9x =
-9x = 3
x = -4
4) √10 - x =
√10 = x +
10 = x^2 + 4x +
x^2 + 4x - 6 = 0
Дискриминант D = 4^2 - 41(-6) = 16 + 24 = 4
x = (-4 ± √40) /
x = (-4 ± 2√10) /
x = -2 ± √1
x = -2 + √10, -2 - √10