Mathematics
Senior High
Solved
写真3行目から4行目への式変形がわかりません
わかる方いたらよろしくお願いします…
α'(-x+6a) +x(x-5) 2 6a(x-5) より
xー(α°+6a+5)x+6α°+30a 2 0
xー(α°+6a+5)x+6a(α°+5) N 0
(x-6a){x-(α°+5)} Z 0
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ものすごく納得しました!!
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