You guess the answer first, then you compute the difference and use that to adjust your estimate ... For example, suppose you wanted to take the square root of 85. You can observe that 9 squared ...
However, more often or not, we will have to use one. If we were asked to find the cube root of 1,728, we may see this written as \(\sqrt[3]{1728}\). Notice this is different to the square root ...
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