SOLUTION: I am having problems with this one I come up with different answers. I have submitted this once before and I was given a totally different answer than even I got or what is in the

Question 82239: I am having problems with this one I come up with different answers. I have submitted this once before and I was given a totally different answer than even I got or what is in the book.
Evaluate √-100 , if possible.
The book gives me these for possible answers.
8
�8
�32
Not a real number

Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Evaluate:

The square root of a negative number is not a real number.
You can see why when you ask "What number, when squared, gives a negtive result?"
The answer is, of course, there isn't one...well, not a real one!
Why is that?
When you square a number, you multiply that number by itself, so the numbers will have the same sign (both + or both -).
The rules of multiplication indicate that when you multiply two numbers having the same sign, the answer will alwys be positive.
Therefore, you cannot find a real number by taking the square root of a negative number.
What do you get when you try, for example, to take the square root of -100?
=
Now is called an "imaginary" number and is given the special symbol of "i".
So...
RELATED QUESTIONS
I am having trouble with this problem, I have come up with a couple different answers.... (answered by longjonsilver)

If 53% of college applications were submitted online, and I have a sample of 1000 apps.,... (answered by stanbon)

The following is the equation I am having difficulty with. I submitted it once before but (answered by checkley71)

I am working on a chapter on equations with absolute value. I am getting fustrated with... (answered by jim_thompson5910)

I am trying to solve 8/(t-8) + 8/(t+8) and having problems. I've come up with three... (answered by ankor@dixie-net.com)

Yuck! I am having so many problems tonight! Here goes Solve by extracting roots. Round... (answered by Earlsdon)

I have one more equation that I am having problems with. Once again, the answer I came... (answered by dolly)

Can anyone help me out with this? I have submitted once before but didn't get a... (answered by stanbon)

I am having the worst time trying to solve this one. Here is what I have: 25x^2 + 10x... (answered by jim_thompson5910,stanbon,solver91311)