Engineers and scientists do work with square roots of negative numbers,
but when they do, the square root is called an "imaginary" number, and
they need a special symbol for it.
For our purposes, and the level of math typically encountered here on WikiAnswers,
the best answer is simply to point out that you can't find any number which, when you
multiply it by itself, gives you a negative answer, so there's no such thing as the
square root of a negative number.
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48 in a square root sign
square root of a negative number is imaginary square root of negative 1 is defined as i square root of negative 144 is sqrt ((144)(-1)) = 12i
The square root of a negative number is not real.
Oh, what a happy little question! When you have the square root of ten over the square root of forty, you can simplify it by dividing the square roots. So, the answer is the square root of ten over the square root of forty simplifies to one over the square root of four, which simplifies further to one over two. Just a little math magic to brighten your day!
Negative 64 is the square root of an integer. The square root of -64 is not an integer.