Mathematics
Senior High
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この問題がわかる人教えてくださいm(_ _)m
(3) 2数a,bの積は負で、かつ-3以上である。
B
ア. 1-3>4m
1.-3<4x
ウラー 34
I. 34x
*. -3<ab < 0
力-3<ab≦O
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