There are mathematical methods to approximate square roots, but it is much more convenient to use a calculator to find square roots. When you use your calculator to find the square root of a number th...There are mathematical methods to approximate square roots, but it is much more convenient to use a calculator to find square roots. When you use your calculator to find the square root of a number that is not a perfect square, the answer that you see is not the exact number. It is an approximation, to the number of digits shown on your calculator’s display. When we use a variable in a square root expression, for our work, we will assume that the variable represents a nonnegative number.
