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September 23, 2014

September 23, 2014

Posted by **Randy** on Wednesday, April 11, 2012 at 9:29pm.

N = x**2 + 2 xy + y**2 + 3

- ALGEBRA -
**Steve**, Thursday, April 12, 2012 at 4:34amyu can do it all manually, or you can note that

(x^2 + 2xy + y^2) = (x+y)^2, so

N = (1+3)^2 + 3 = 16+3 = 19

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