Jawabanmu

2014-09-07T18:44:02+07:00
( x + y)² : xy =
(x+y)(x+y) : xy =
x² + 2xy + y² : xy =
xy pangkat -1 + 2 + x pangkat -1 y 
maaf kalo salah :)
2014-09-07T18:51:15+07:00
( x + y)² : xy =
(x+y)(x+y) : xy =
x² + 2xy + y² : xy =
x² + xy + y²