Hello, I wanted to know if I can square a negative number..? Thank You, Susana Hi Susana, Yes, you can square a negative number. In fact, any number at all can be squared, even numbers like pi and 0. This is because to square a number just means to multiply it by itself. For example, (-2) squared is (-2)(-2) = 4. Note that this is positive because when you multiply two negative numbers you get a positive result. You may be confused about whether you can square a negative number because what you can't do is take the square root of a negative number. This is because if a negative number had a square root, you would have to find a number that when you multiply it by itself, the result would come out negative. This can't happen because either that number would be positive and a positive times a positive is positive, or that number would be negative and a negative times a negative is also positive. Only a positive times a negative (or a negative times a positive) will result in a negative answer and then those numbers would not be the same (because they have different signs) and so they could not be square roots. Hope this helps, Leeanne Go to Math Central