CHO P(X) = X3 -2X + 1 Q(X) = 2X2 – 2X3 +X- 5 TÍNH P(X) + Q(X) ;...

Bài 3. Cho P(x) = x

3

-2x + 1 Q(x) = 2x

2

– 2x

3

+x- 5

Tính P(x) + Q(x) ; P(x) – Q(x)