Mathematics
Senior High
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二次方程式x²-2mx+m+12=0が正の解と負の解をもつとき、定数mの値の範囲を解法付きで教えてください!ちなみに答えはm<-12になるそうです!

二次関数

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✨ Best Answer ✨

f(x)=x^2-2mx+m+12とおく。
2つの解が正と負だからf(0)<0→m<-12
判別式やって(省略)、共通範囲が、m<-12

🐥🐥🐥

おお!ありがとうございます😆

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