Guess what? An \(n\)th root \(x\) is a number which when raised to the \(n\)th power, gives \(x\) back! Just like square roots and cube roots.
We write the positive \(n\)th root of \(x\) as \(\sqrt[n]{x}\).
It’s nice to note that if \(n\) is even, then both \(\sqrt[n]{x}\) and \(-\sqrt[n]{x}\) are its \(n\)th roots. If \(n\) is odd, then \(\sqrt[n]{x}\) is the only real root.