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nmh9b.2005
2 năm trước
Bài 1 tính (2x+1)(2x^2-3x+1) Bài 2 Cho A=2x^3-2+2x^4+5x-3x^2-x^3 B= 1-2x+x^2+x a) sắp xếp A và B b) tính A:B c) x=0 có phải là nghiệm của B ko ? Vì sao
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