What is the Square Root of 4?
The square root of 4 (√4) is 2. 4 is a perfect square (2 × 2 = 4).
Exact Answer
√4 = 2
Principal Root (√4)
2
Real Roots
±2
Perfect Square?
Yes (2²)
Exponential Form
4^(1/2)
Step-by-Step Solution: √4 = 2
Step 1
Definition of Square Root
The square root of 4 is the number y such that y × y = 4.
√4 = 2
Summary & Alternative Representations
| Property / Format | Value |
|---|---|
| Principal Root (√4) | 2 |
| Real Roots | ±2 |
| Perfect Square? | Yes (2²) |
| Exponential Form | 4^(1/2) |
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Frequently Asked Questions
Is 4 a perfect square?
Yes, 4 is a perfect square because 2 × 2 = 4.