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. Cho biểu thức A = |3x -1| - (x -7) a) Rút gọn A b) Tính A biết x= 3 ; x= 0; x= -2 c)Tìm x biết |A| = 8
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. Cho biểu thức A = |3x -1| - (x -7)

a) Rút gọn A b) Tính A biết x= 3 ; x= 0; x= -2 c)Tìm x biết |A| = 8

User Jesica
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