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dieu1162001
2 năm trước
Tìm số nguyên x để biểu thức sau có giá trị nhỏ nhất a) A= 2021+|2x+2020|²⁰²⁰ b) B = -7 / (x+5)²+1 c) C=3 / 21-|x+7| P/s: dấu gạch ngang là "phần"
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