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kimvan1988.88
2 năm trước
Cho A = ( 1/x-1-x/1-x^2.x^2+x+1/x+1) : 2x+1/x^2+2x+1 a, Rút gọn A b, TÍnh giá trị của A khi x = 1/2 c, Tìm các giá trị nguyên của x để A có giá trị nguyên
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