If you use a guess and check method, you see that 2² = 4 and 4² = 16.
Since 4 < 9 < 16 the next logical step would be checking 3².

3² = 3 x 3
3² = 9 <--- We match our original number!!!
Therefore, √9 = ±3

The principal root is the positive square root, so we have a principal root of 3

Answer

↓Steps Explained:↓

Evaluate the following

√9

Term 1 has a square root, so we evaluate and simplify:

Group constants

3 = 3

Final Answer:

3

---

Take the Quiz


Related Calculators:  Estimate Square Roots  |  Powers Of  |  Conjugates