Mathematics
Senior High
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(2)(3)(4)を教えてください
8 次の2次方程式が, 重解をもつような定数aの値を定めよ。
(1) x2+ax+1=0
(3) x²+(a-3)x-3a=0
●ポイント
(2) x²+2ax+a+2=0
(4) x2+2(a-1)x+3a-5=0
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