SOLUTION: I need to calculate the distance between point a and b when a is (-1,5) and b is (7,-3). i come up with the square root of 128. Can that be right when there is no exact square roo

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Question 886627: I need to calculate the distance between point a and b when a is (-1,5) and b is (7,-3). i come up with the square root of 128. Can that be right when there is no exact square root of 128?
Found 2 solutions by josgarithmetic, Edwin McCravy:
Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!
That complaint is not a real hindrance.




Square root of that is .
Answer by Edwin McCravy(20054)   (Show Source): You can put this solution on YOUR website!
Yes, it is common for distances between two points with whole numbers
for coordinates to be the square root of a number with no exact square root.

However  can be simplified

.

Even though you can't get rid of a radical, always simplify it so as to have
as small a number under the square root radical as possible.

Edwin
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