|
De som van alle (reële) oplossingen van de vergelijking
(x – 2)⁴ – 625 = 0
is
|
A. 0 |
|---|
| B. 3 |
| C. 4 |
| D. 5 |
| E. 10 |
[ vA121 - op net sinds 19.1.2026-(E)- ]
Translation in E N G L I S H
Oplossing - Solution
(x – 2)⁴ – 625 = 0
(x – 2)⁴ = 625
(x – 2)² = 25 ∨ (x – 2)² = –25
x – 2 = 5 ∨ x – 2 = –5
x = 7 ∨ x = –3
De gevraagde som is dus 7 + (− 3) = 4
