Tím các số nguyên x,y : (x-3).(y+2)=3
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TV
1
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29 tháng 10 2018
x/6 - 1/y = 1/2
=> 1/y = x/6 - 1/2
=> 1/y = x-3/6
=> 6 = y(x - 3)
bn tự xét bảng là ra
EC
1
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8 tháng 9 2019
1. Vì 3\(⋮\)a-2
\(\Rightarrow\)a-2 thuộc Ư(3)
\(\Rightarrow\)a-2 thuộc {-1;-3;1;3}
\(\Rightarrow\)a thuộc {1;-1;3;5}
TH
0
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PH
0
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