a) Cho x Z , tìm giá trị nhỏ nhật của | 6 - x | + | 11 + x |
b) Cho y Z , tìm giá trị lớn nhất của | y + 5 | - | y - 4 |
Giải
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( các bạn giải rõ ra giùm mik nhé )
Thanks !