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If x = \sqrt{2006} and y = \sqrt{2007}, what is the simplified value of (x + y)^2 + (x - y)^2?

 Dec 28, 2021
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(x + y)^2              +         (x - y)^2 =

x^2 + y^2  + 2 xy  +       x^2 + y^2 - 2xy  =

2x^2 + 2y^2 =

2 ( 2006) + 2 (2007) =     <======== you can finish

 Dec 28, 2021

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