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Answers
(6) -3x²+6x-2≧0
3x²-6x+2≦0
3x²-6x+2=0 を解くと
x=(3±√3)/3 である事から
(3-√3)/3≦x≦(3+√3)/3
補足(他の式表現として)
1-(√3/3)≦x≦1+(√3/3)
ありがとうございます
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ありがとうございます