Mathematics
Senior High
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4番の答えは、重解であっていますか?答えがないので判断お願いしたいです。

習 次の2次方程式の解の種類を判別せよ。 1 (1) x2+5x+5 = 0 (3) -4x2+x-1=0 (2) 2x²+4x+3= 0 (4) x2-2√3x+3=0

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