- #1
bobsmith76
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Homework Statement
17. xy = 2
The Attempt at a Solution
Do you see that step where they do the following:
√2/2 - √2/2 = my answer is 0
and they multiply that to
√2/2 + √2/2 = my answer is √2
So to me the answer is 0 * √2 = 0, but the book shows that that calculation = 2, then they set x over 2 and y over 2, don't understand why.
I don't understand what the book is doing. I understand everything else except that one part.
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