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changchang161003
2 năm trước
bài 5 cho biểu thức A=x^2+x/x^2-2x+1/(x+1/x-1/1-x+2-x^2/x^2-x) A) rút gọn A B) tính Akhi x thỏa mãn[3x-1]-x=2 C) tìm x nguyên để a nguyên D) tìm x để A<0
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