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vha0901ha
2 năm trước
I,Trắc nghiệm 1,Một hình hộp chữ nhật có bao nhiêu mặt A,4 / B,5 / C,6 / D,7 2, Nếu 2a+3 ≤2b+3 thì A,a ≥-b / B,a ≥b / C,a ≤-b / D,a ≤b 3,Tập nghiệm của phương trình /x-4/=2 là A,-2,6 B,-2,-6 C,2,-6 D,2,6
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