Odpowiedzi

2010-02-20T13:31:33+01:00
(2x³+x²-x-1) + (x+2)=2x³+x²-x-1+x+2=2x³+x²+1

(x+2) + (x²-x+1)=x+2+x²-x+1=x²+3
2010-02-20T13:31:48+01:00
(2x³+x²-x-1) + (x+2)=2x³+x²+1

(x+2) + (x²-x+1)= x²+3
2010-02-20T13:35:21+01:00
(2x³+x²-x-1) + (x+2) = 2x³+x²-x-1+x+2 = 2x³+x²+1

(x+2) + (x²-x+1) = x+2+x²-x+1 = x²+3