Q1: What is a square root?
The square root of a number is a value that, when multiplied by itself, gives the original number. For example, the square root of 25 is 5 because 5 × 5 = 25. It's denoted by the √ symbol.
Q2: Can I calculate the square root of negative numbers?
No, the square root of negative numbers is not a real number. In mathematics, √(-1) is represented as "i" (imaginary unit). This calculator only handles non-negative numbers (zero and positive numbers).
Q3: What is the square root of zero?
The square root of zero is zero (√0 = 0). This is because 0 × 0 = 0. Zero is the only number whose square root equals itself.
Q4: How precise are square root calculations?
The calculator displays results with up to 6 decimal places for accuracy. Most square roots of non-perfect squares are irrational numbers (infinite decimals), so the result is rounded for practical use.
Q5: What are perfect squares?
Perfect squares are numbers that are the square of integers. Examples include 1 (1²), 4 (2²), 9 (3²), 16 (4²), 25 (5²), etc. Their square roots are whole numbers.
Q6: How do I calculate square roots manually?
Manual methods include prime factorization (for perfect squares), the long division method, or estimation. For most practical purposes, using a calculator is the fastest and most accurate method.