Question

Simplificar:
(x+y)(x-y)-(x+y)2

Answer 1

(x+y)(x-y)-(x+y)^(2)

(x*x+x*-y+y*x+y*-y)-(x+y)^(2)

(x^(2)-y^(2))-(x+y)^(2)

(x^(2)-y^(2))-(x*x+x*y+y*x+y*y)

(x^(2)-y^(2))-(x^(2)+2xy+y^(2))

(x^(2)-y^(2))+(-(x^(2))-(2xy)-(y^(2)))

(x^(2)-y^(2))+(-x^(2)-2xy-y^(2))

x^(2)-y^(2)-x^(2)-2xy-y^(2)

0-2xy-y^(2)-y^(2)

respuesta     -2xy-2y^(2)