it is the square of that number (eg 25 is the square of 5........5 x 5 = 25
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No number times itself can give the result of -144 .Any number has the same sign as itself has, and whenever you multiplytwo numbers that have the same sign, the result is a positive number.
Of course, not only can it be a real number but it is a real number. When you take the square root times itself, the result is a number that is real.
31
squaring a number is when you times it by itself. eg. 2x2 or 5x5 cubing a number is when you times it by itself and then times it again. eg. 2x2x2 or 5x5x5
Subtracting a number by itself will leave you with 0, whereas dividing leaves 1. So dividing a number by itself will give the larger result.