1) √3 + √x - 1 = 1
3 + √ x - 1 = 1²
3 + √x - 1 = 1
√x - 1 = 1 - 3
√x - 1 = - 2
x - 1 = (-2)²
x - 1 = 4
x = 4 + 1
x = 5
Ответ: x = 5
2) √5x - 6 = - x
5x - 6 = (-x)²
5x - 6 = x²
- x² + 5x - 6 = 0
x² - 5x + 6 = 0
D = b² - 4ac = 25 - 4 × 6 = 1
x1 = ( 5 + 1) / 2 = 3
x2 = ( 5 - 1) / 2 = 2
Ответ: x1 = 3, x2 = 2.