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tronglun555
2 năm trước
Bài 3 : Cho các đa thức: A(x) = 2x^4 – 5x^4 – 6x + 3x^3 + 7x^2 – 2 và B(x) = - 3x^2 – 9x^3 + 2x^2 + 7 – 5x^^4 + 11x3 a) Thu gọn và sắp xếp các đa thức theo lũy thừa giảm của biến b) Tính 2A(x) – B(x)
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