Mathematics
Junior High
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X25
x=1-2aが, 2次方程式x2 + 2 (a - 1)x - 2 (a-1)(2a-1)=0の負の解になるとき, aの値を
求めよ。
Spr
1+400
20²-1
a=
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合ってます！！本当にありがとうございます🥲