Jawabanmu

2014-08-27T19:11:28+07:00
2014-08-27T19:14:08+07:00
1. 2(x-5) + 12(x-5)
2x-10+12x-60

2. 2x(4xpngkt2+2xy+ypngkt2)-y(4xpngkt2+2xy+ypngkt2)
8xpngkt3+4xpngkt2y+2xypngjt2-4xpngkt2y-2xypngkt2-ypngkt3