Задача Задача №3400170
А
А
Solve x^2 + 16x + 24 = 0.
Option 1: Quadratic formula
- a = 1, b = 16, c = 24
- Discriminant D = b^2 - 4ac = 256 - 96 = 160
- x = (-b ± sqrt(D)) / (2a) = (-16 ± sqrt(160)) / 2 = -8 ± sqrt(40) = -8 ± 2√10
So the roots are x = -8 + 2√10 and x = -8 - 2√10. Approximate: x ≈ -1.675 and x ≈ -14.325.
Option 2: Complete the square (for check) x^2 + 16x + 64 = 40 → (x + 8)^2 = 40 → x = -8 ± √40 = -8 ± 2√10.
If you need, I can show a quick substitution check.