Radical 5, or the square root of 5, is an irrational number, meaning its decimal representation neither terminates nor repeats.
Therefore, the exact answer is √5 (the square root of 5). While you can approximate its value, it cannot be expressed as a simple fraction or terminating decimal.
A common approximation for √5 is roughly 2.236. However, this is just an approximation. To represent the true, exact value, we keep it in radical form: √5. The video referenced suggests that it can be represented as 51/2 or approximately 2.236. However, 51/2 is equivalent to √5 and 2.236 is only an approximation.
