Check to find the ‘power’ button on your own calculator. This is particularly useful when the index number is large. The square root of \({16}\) is \({4}\) (because \(4^2 = 4 \times 4 = 16\)).

To find the cube root of a number, we have to find out which number ... Notice this is different to the square root symbol because there is a small subscript 3 in front of the \(\sqrt{}\).