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Exchange

In addition to its common dictionary uses the word "exchange", can have some specialized uses:

It is also the name for three communities in the United States:

This is a disambiguation page; that is, one that just points to other pages that might otherwise have the same name. If you followed a link here, you might want to go back and fix that link to point to the appropriate specific page.



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Quadratic formula

... on x) to the expression to the left of "=", that will make it a perfect square trinomial of the form x2 + 2xy + y2. Since "2xy" in this case is (b/a)x, we must have y = ...

 
 
 
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