Odpowiedzi

2010-03-27T16:03:58+01:00
-2x(x-5y-3)+3x(x+5y+2)=-2x²+10xy+6x+3x²+15xy+6x=x²+25xy+12x
2010-03-27T16:03:59+01:00
-2x(x-5y-3)+3x(x+5y+2)= -2x² +10xy + 6x + 3x² + 15xy + 6x = x²+25xy + 12x
2010-03-27T16:07:29+01:00
-2x(x-5y-3)+3x(x+5y+2)=-2x+10xy+6x+3x+15xy+6x