(i) 729 can be factorised as follows.
729 = 3 × 3 × 3 × 3 × 3 × 3
∴ √729 = 3 x 3 x 3 = 27
(ii) 400 can be factorised as follow.
400 = 2 x 2 x 2 x 2 x 5 x 5
∴ √400 = 2 x 2 x 5 = 20
(iii) 1764 can be factorised as follows.
1764 = 2 × 2 × 3 × 3 × 7 × 7
∴ √1764 = 2 x 3 x 7 = 42
(iv) 4096 can be factorised as follows.
2 | 4096 |
2 | 2048 |
2 | 1024 |
2 | 512 |
2 | 256 |
2 | 128 |
2 | 65 |
2 | 32 |
2 | 16 |
2 | 8 |
2 | 4 |
2 | 2 |
| 1 |
4096 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2
∴ √729 = 2 x 2 x 2 x 2 x 2 x 2 = 64