Question

desarrolle
(x+2y) al cuadrado - (x-2y) al cuadrado

Answer 1

$( x+2y)^{2} - (x-2y)^{2}$

$x^{2} +4xy + y^{2} - ( x^{2} -4xy+ y^{2})$

$x^{2} +4xy + y^{2} - x^{2} +4xy- y^{2}$

8xy