Mathematics
Senior High
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(1)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) x^²+ax+1=0
(3) x²+(a-3)x-3a=0
to b
(2) x2+2ax+a+2=0
(4) x²+2(a-1)x+3a-5=0
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