The Split-Sum Error
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
The split-sum error distributes a radical over addition; roots split over products only, and √(a + b) is not √a + √b.
Show
√(9 + 16) is √25 = 5, while √9 + √16 is 3 + 4 = 7. The split changes the answer.
Watch for
The same trap waits inside √(a² + b²).
Builds on
- Nothing — this is a starting point.
Unlocks
- Nothing yet depends on this.