Answer :

texaschic101
(x + y)^2 =
(x + y)(x + y) = x^2 + xy + xy + y^2 = x^2 + 2xy + y^2
ALWAYS TRUE :)
Zinethar
This is always true! Foil out the left side of the equation.
(x+y)(x+y)=x^2+xy+yx+y^2=x^2+2xy+y^2

Hope this helps!

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