Đáp án: B. 1
=sum(-4,3,2) = -4 + 3 + 2 = 1
Câu 2: =sum(-4,3,2) có kết quả: *
`→ b. 1`
Vì `-4+3+2=1` nên =sum(-4,3,2) có kết quả `1`
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