1.7 · IndicesLesson 7 of 12
Fractional indices: roots
Two halves make a whole, so 9^½ × 9^½ = 9¹, which makes 9^½ the square root, 3. The index 1/n means the nth root.
Locked
Unlock the rest of Cambridge O Level Mathematics: Number (4024).
- Every lesson, every resource, unlocked instantly.
- Track progress and pick up where you left off.
- Free preview lessons stay readable from the outline.