√16 - √x + 1 = 4
16 - √x + 1= 4²
- √x + 1 = 16 - 16
x + 1 = 0²
x= - 1
Ответ: x = - 1.
1 + x √ x² + 24 = (x + 1)(x + 1)
1 + x√x² + 24 = x² + 2x + 1
x√x² + 24 = x² + 2x + 1 - 1
x√x² + 24 = x² + 2x
x² × (x² + 24 )= (x² + 2x)(x² + 2x)
x⁴ + 24x² = x⁴ + 4x³ + 4x²
x⁴ + 24x² - x⁴ - 4x³ - 4x² = 0
- 4x³ + 20x² = 0
4x³ - 20x² = 0
4x²(x - 5) = 0
4x² = 0
x² = 0
x = 0
x - 5 = 0
x = 5
Ответ: x1 = 0, x2 = 5.