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2) Tìm các giá trị của x để biểu thức M = (x + 5).(x + 9) a) có giá trị dương. b) có giá trị âm
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2) Tìm các giá trị của x để biểu thức M = (x + 5).(x + 9)

a) có giá trị dương. b) có giá trị âm

User Kuntady Nithesh
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Answer:

please translated to english

User Kjfletch
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