Question 142860: -9^2/(-2)^2
(PS: Please show how you worked it out. I have been having mojor problems with these kinds of questions. Thanks.)
Answer by Fruglemiester1234(13)   (Show Source):
You can put this solution on YOUR website! For this one you've really got to be careful with your signs and squares.
Heres the key:
-9 * -9 = 81....that little 2 next to the nine only means your times -9 by itself twice. Then you've got to remember that 2 negatives multipylied together equals a positive.
-2 * -2 = 4...same thing
You end up with 81/4, which sadly is a decimal (20.25)..I really do like it much better when its a whole #...
As a math student you should really get to know your square root numbers really well. 4,9,16,25,36,49,64,81,100,121,144....and so on.
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