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(r + s)2
(r + s)^2 = (r + s)(r + s); = r^2 + rs + rs + s^2; = r^2 + 2rs + s^2
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Asked 5/11/2011 7:36:05 AM
Updated 7/4/2014 6:59:48 AM
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(r + s)^2

= (r + s)(r + s);

= r^2 + rs + rs + s^2;

= r^2 + 2rs + s^2

Added 7/4/2014 6:59:48 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [7/4/2014 7:07:37 AM]
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