Odpowiedzi

2009-11-02T12:30:42+01:00
13 -2(3x2-9-x4+3x2)+(x4+10x2+25)-(3x4-12x2-3x3+12x-x2+4)-3x3=13-6x2+18+2x4-6x2+x4+10x2+25-3x4+12x2+3x3-12x+x2-4-3x3=11x2+12x+52