Mathematics
Senior High
この問題の(3)番のやり方教えてください。
解説お願いします🙏
*287 2 次方程式 2**一4z十1=0 の 2 つの稲を g 8 (oく8) とす |@
2を人 るとき, んのの生 4 JrW- 2
の !
G) e+ ⑫ RT Ng 呈 ラ
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