Here's an alternative proof:
x- y is common to both terms as is 2 so
4(x-y)-2(x-y)2 = 2(x-y)(2 - (x-y)) = 2(x - y)(2 - x + y)
You can add fractions in the scientific part of the calculator, but the specific section of the calculator devoted to fractions still doesn't work (29th Oct. 2015).
I think the questioner knew how to solve it Rom's way (see the question title). He/she was looking for a possible alternative method!
The distance is given by sqrt{(x1 - x2)^2 + (y1 - y2)^2}
You can fill in the numbers.
WolframAlpha hasn't interpreted your syntax the way you intended. See
http://www.wolframalpha.com/input/?i=integrate+1%2F%28A%5E2%2BB%5E2%29%5E%283%2F2%29+with+respect+to+B
Also notice that I've put brackets around the 3/2 power.
This is the same as Melody's first answer Guest. Good try, but unfortunately it isn't correct - see my first reply above to see why.
You're welcome!
I find it fascinating that the question is much more complicated than it appears to be at first sight.
As below:
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+33667 
