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2 năm trước
cho 2 đa thức M(x)=x^4+5x^3-x^2+x-0,5-x^3+2x^2 N(x)=3x^4-5x^2-x-2,5-3x^4-4x^3 a) thu gọn và sắp xếp mỗi đa thức trên b) tìm bậc, hệ số cao nhất, hệ số tự do của mỗi đa thức trên c) hãy tính: M(x)+N(x) & M(x)-N(x)
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