Posted by crystal on Sunday, January 11, 2009 at 9:24pm.
explain why (x + y)2= x2 + y2

college algebra  Damon, Sunday, January 11, 2009 at 9:37pm
If you are telling me that
(x+y)^2 = x^2 + y^2
That is not true
(x+y)^2 = x^2 + 2 x y + y^2
as you can see by multiplying
(x+y)(x+y) = x(x+y) + y(x+y) =x^2 + xy + xy + y^2 
college algebra  Damon, Sunday, January 11, 2009 at 9:39pm
Now if you mean
2 (x + y) = 2 x + 2 y
that is simply the distributive property of multipication. 
college algebra  john, Saturday, October 4, 2014 at 9:16pm
solc for v
[\sqrt;[6v2]]=[\sqrt;[9v8]]