Compute the square root of any positive real number with adjustable decimal precision. Step‑by‑step result shown below.
For a non‑negative real number \(x\), the square root \(\sqrt{x}\) is the unique non‑negative number \(y\) such that \(y^2 = x\).
Example: \(\sqrt{9} = 3\) because \(3^2 = 9\). For non‑perfect squares, the result is an irrational number approximated to the chosen decimal places.
\[ \sqrt{x} = y \quad \Longleftrightarrow \quad y^2 = x,\; y \ge 0 \]