2^2 = 4\). Reversing this gives \(\sqrt{4} = 2\). To find square roots or cube roots, work backwards from square numbers and cube numbers. If you know that \(15^2= 225\), then you also know that ...

A cube may be written using index notation: 5³ is 5 cubed. 64 is both a perfect square (64 = 8 × 8) and a cube. (64 = 4 × 4 × 4). 8 has four factors, 8, 4, 2 and 1. It is a composite number ...

the square root of 2025. Perfect cube years are even rarer. The most recent one was in 1728, and the next one won’t be until 2197, when most of us here today will likely be too occupied with ...