Jawabanmu

2014-09-02T13:35:03+07:00
2x-3y+6.x-y+5
2x²+3y²+11
maaf kalo salah
semoga membantu :)
2014-09-02T14:00:57+07:00
(2x-3y+6) (x-y+5) = 2x²-2xy+10x-3xy+3y²-15y+6x-6y+30 = 2x²+3y²-2xy-3xy+10x+6x-6y-15y+30 = 2x²+3y²-5xy+16x-21y+30