Activité 3 – Produit remarquables : exercices de synthèse

e)	Complète par = ou <>

x2 – y2	2<>	y2 – x2	2(x – y) . (x – y) x2 – 2xy + y2	2<>	x2 + y2
(x + 5) . (x – 5) x2 – 25	2<>	x2 – 10	(2x – y)2 4x2 – 4xy + y2	2<>	(x – 2y)2 x2 – 4xy + 4y2
(x – y)2 x2 – 2xy + y2	2=	(y – x)2 y2 – 2xy + x2	(x + y)2 x2 + 2xy + y2	2=	(–x – y)2 (–x)2 – 2.(–x).y + y2 x2 + 2xy + y2
xy2	2<>	x2y	(x – y)2 x2 – 2xy + y2	2<>	x2 – y2
x2 + y2	2<>	(x + y)2 x2 + 2xy + y2	x2y2	2=	(xy)2 x2y2