Respostas

2013-10-04T16:32:50-03:00
(-2y-5)*(-y+2)-(5y-1)*(3y+1)
2y²-4y+5y-10-(15y²+5y-3y-1)
2y²+y-10-15y²-2y+1
-13y²-y-9
3 4 3