Spreadsheets and word-processor programs have special characters that can be inserted.
The sq root shown here was done on the calculator program found in most computer's software lists. This example of the sq root of 144 was copied and pasted here: √144 = 12
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The square root of 144 is: ± 12
The square root of 81 is 9
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No because the square root of 98 is 7 times the square root of 2
Square roots are + or - . So the best way to write this square root is ± 169.